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A single percentage point of relative humidity can mean the difference between a thriving tomato crop and an outbreak of botrytis that wipes out your yield in forty-eight hours. Yet most growers rely on basic thermometers that tell them nothing about the moisture saturating their greenhouse air—the invisible factor driving transpiration rates, pathogen growth, and whether your ventilation system kicks in at the right moment or three hours too late.
Humidity gauges for greenhouses transform guesswork into precision, giving you the real-time data you need to catch problems before fuzzy gray mold appears on your fruit or powdery mildew colonizes every leaf surface. The right sensor doesn’t just measure moisture—it becomes your early warning system, connecting wireless alerts to your phone and logging the exact conditions that either support plant health or invite disaster.
Table Of Contents
- Key Takeaways
- Best Humidity Gauges for Greenhouses
- Key Features of Greenhouse Humidity Gauges
- Importance of Accurate Humidity Monitoring
- Installation Tips for Humidity Gauges
- Maintenance and Calibration Best Practices
- Integrating Humidity Gauges With Monitoring Systems
- How to Choose The Right Gauge for Your Needs
- Frequently Asked Questions (FAQs)
- What is a good humidity level for a greenhouse?
- How do you measure humidity in a greenhouse?
- What type of thermometer is best for a greenhouse?
- What humidity level causes mold in greenhouses?
- Can humidity gauges measure soil moisture too?
- Do humidity spikes harm seedlings or cuttings?
- How often should greenhouse humidity be checked?
- Are Bluetooth gauges better than Wi-Fi models?
- Conclusion
Key Takeaways
- Greenhouse humidity gauges prevent costly crop failures by catching problems like botrytis and powdery mildew before they spread, with accuracy differences as small as ±2-3% RH separating professional-grade instruments from unreliable alternatives that require frequent recalibration.
- Proper sensor placement at canopy height (1.5-2 meters) away from walls, irrigation zones, and direct airflow ensures accurate microclimate readings, while larger greenhouses over 2,000 square feet need multiple sensors positioned every 500-2,000 square feet to capture zone-specific conditions.
- Smart humidity gauges with Wi-Fi connectivity deliver remote monitoring, automatic alerts, and data logging capabilities that transform reactive crisis management into proactive cultivation, though they cost $130-$300 compared to $10-$20 basic analog models.
- Maintaining relative humidity between 50-80% proves essential for plant health, as levels above 85% trigger fungal spore germination and disease outbreaks while readings below 30% stress plants and slow photosynthesis, making regular calibration every 3-4 months critical for sensor accuracy.
Best Humidity Gauges for Greenhouses
Selecting the right humidity gauge for your greenhouse means balancing accuracy, connectivity, and durability to match your specific monitoring needs.
If you’re new to monitoring environmental conditions, this beginner’s guide to reptile humidity gauges covers the foundational features that also apply to greenhouse setups.
The models below represent proven options across different price points, from basic digital readers to sophisticated Wi-Fi systems that track environmental data around the clock. Each offers distinct advantages depending on whether you’re managing a small hobby greenhouse or a larger commercial operation.
1. Inkbird Digital Humidity Controller
The Inkbird IHC-200 stands out for greenhouse operators who need precise, automated humidity control across a 5% to 99.99% RH range with ±3% accuracy. You’ll appreciate its dual-relay system, which independently controls both humidifier and dehumidifier outputs based on a single setpoint, automatically switching between modes as conditions shift.
The calibration function lets you align readings with reference hygrometers, essential for maintaining ideal moisture levels that prevent botrytis and support healthy transpiration without constant manual intervention.
| Best For | Greenhouse operators, mushroom growers, and hobbyists who need automated dual-stage humidity control without WiFi connectivity. |
|---|---|
| Display Type | Digital LCD |
| Power Source | Corded Electric |
| Connectivity | None |
| Weight | 15.8 oz |
| Primary Use | Humidity Control |
| Indoor/Outdoor | Indoor |
| Additional Features |
|
- Automatically switches between humidifying and dehumidifying modes based on a single setpoint, eliminating manual adjustments
- Built-in calibration function ensures accuracy against reference hygrometers for precision-critical applications
- Wide 5-99.99% RH range with alarm notifications handles diverse growing environments from succulents to tropical plants
- Poorly translated instruction manual makes initial setup and troubleshooting frustrating
- Requires humidifiers and dehumidifiers with mechanical switches to recover properly after power outages
- No WiFi or remote monitoring capability limits convenience for users managing multiple grow spaces
2. Ecowitt Wi-Fi Weather Station Gateway
For greenhouse operators managing multiple zones, the Ecowitt GW1100 gateway connects to a full network of wireless sensors, transmitting data over 2.4 GHz Wi-Fi with minute-level updates for near real-time monitoring.
You can track temperature, humidity, soil moisture, and even leaf wetness readings through the WS View app or Ecowitt’s web portal, with data exportable as spreadsheets for pattern analysis. The USB-powered gateway accommodates sensors up to 200 feet away, making it ideal for large operations requiring thorough environmental oversight without constant manual checks.
| Best For | Greenhouse operators and serious weather enthusiasts who need to monitor multiple environmental zones with a network of wireless sensors and want real-time data accessible through mobile apps or web dashboards. |
|---|---|
| Display Type | Digital LCD |
| Power Source | Corded Electric |
| Connectivity | Wi-Fi |
| Weight | Not specified |
| Primary Use | Weather Monitoring |
| Indoor/Outdoor | Both |
| Additional Features |
|
- Supports a wide range of Ecowitt sensors (temperature, humidity, soil moisture, rain, wind, air quality, lightning) so you can build a complete monitoring system tailored to your needs
- Provides minute-level data updates with remote access through the WS View app, plus integration with popular weather services like Weather Underground for data sharing
- Sensors work up to 200 feet from the gateway and data exports to spreadsheets make it easy to spot trends over time
- Setup and calibration instructions can be confusing, especially for users new to weather station equipment
- Requires a stable Wi-Fi connection and may need manual resets if your router reboots, which can be annoying for remote installations
- Customer support is limited to email only, so troubleshooting issues might take longer than with phone support
3. SensorPush Smart Temperature Humidity Sensor
If you’re working with a smaller setup or need portable monitoring, the SensorPush HT1 delivers professional-grade data in a compact form factor measuring just 1.57 inches. This Bluetooth sensor tracks temperature from -40°F to 140°F and humidity across the full 0–100% range, with accuracy usually within 0.5°F and ±3% RH.
Pair it with your smartphone for real-time alerts, or add the optional gateway to access readings remotely from anywhere. The device logs over two weeks of data internally, syncing automatically when you’re in Bluetooth range.
| Best For | Anyone monitoring temperature and humidity in hard-to-reach spots like freezers, greenhouses, RVs, or instrument cases who wants accurate data without constant manual checks. |
|---|---|
| Display Type | Digital LCD |
| Power Source | Battery (Lithium) |
| Connectivity | Bluetooth |
| Weight | 23 g |
| Primary Use | Temperature/Humidity Monitoring |
| Indoor/Outdoor | Both |
| Additional Features |
|
- Tracks a wide range (temp from -40°F to 140°F, humidity 0-100%) with solid accuracy and logs two weeks of data automatically
- Super compact at 1.57 inches with long battery life (1-2 years), making it easy to place anywhere
- Real-time smartphone alerts keep you informed, and you can add a gateway for remote access from anywhere
- Bluetooth range can be weak in metal environments like refrigerators or RVs
- You’ll need to buy a separate WiFi gateway if you want to check readings when you’re away from home
- Some users mention the app’s zoom function feels limited and readings might need occasional calibration
4. Ambient Weather Smart Home Station
For growers managing larger operations or seeking whole-greenhouse data, the Ambient Weather Smart Home Station (WS-2902C) transforms your setup into a networked monitoring hub.
If you’re also looking to fine-tune climate control at home, check out our guide on thermostats for small apartments for compact, energy-efficient options.
This Wi-Fi-enabled system tracks temperature, humidity, wind speed and direction, rainfall, UV intensity, and solar radiation through its extensive sensor array—giving you hyperlocal conditions at a glance on its color LCD display.
You’ll access readings remotely via the Ambient Weather Network, set custom alerts, and even integrate with Alexa or Google Assistant for voice-driven reports.
| Best For | Commercial growers or serious hobbyists who need comprehensive environmental monitoring across larger greenhouse spaces with remote access and smart home integration. |
|---|---|
| Display Type | LCD Color Display |
| Power Source | Solar/Battery |
| Connectivity | Wi-Fi |
| Weight | 3.9 lbs |
| Primary Use | Weather Station |
| Indoor/Outdoor | Both |
| Additional Features |
|
- Tracks six key metrics (temperature, humidity, wind, rain, UV, solar radiation) in one system for complete environmental awareness
- Wi-Fi connectivity lets you check conditions from anywhere and set up automated alerts for weather events
- Integrates seamlessly with smart home platforms like Alexa and Google Assistant for hands-free monitoring
- Wind speed readings cap out at 99.9 mph, which may limit usefulness in extreme weather zones
- Rain gauge needs regular cleaning to stay accurate, adding maintenance tasks to your routine
- Mounting hardware not included, so you’ll need to purchase a separate pole or tripod for proper outdoor placement
5. ThermoPro Digital Hygrometer Indoor Thermometer
Budget-conscious horticulturists will appreciate the ThermoPro Digital Hygrometer for its straightforward reliability. This compact unit delivers ±1°F temperature accuracy and ±2–3% RH precision, updating every 10 seconds to capture rapid microclimate shifts in your greenhouse.
Its clear LCD displays current conditions, high and low records, and a wellness indicator—all powered by a single AAA battery that usually lasts over a year. The tabletop stand and magnetic back offer flexible placement on shelves or metal benches without crowding your growing space.
| Best For | Budget-conscious greenhouse growers who need reliable climate monitoring without spending much. |
|---|---|
| Display Type | Digital LCD |
| Power Source | Battery (AAA) |
| Connectivity | None |
| Weight | 0.06 kg |
| Primary Use | Temperature/Humidity Monitoring |
| Indoor/Outdoor | Indoor |
| Additional Features |
|
- Accurate readings (±1°F and ±2–3% RH) that update every 10 seconds to catch quick changes
- Flexible placement with both a stand and magnetic back, so you can put it anywhere
- Long battery life—over a year on a single AAA—means less hassle
- LCD screen can fail after about a year, with numbers fading or disappearing
- Not weatherproof, so keep it away from rain and direct water exposure
- Basic feature set compared to pricier models with data logging or smartphone connectivity
Key Features of Greenhouse Humidity Gauges
When you’re shopping for a greenhouse humidity gauge, you’ll quickly realize that not all models offer the same capabilities, and understanding which features matter most can save you from costly mistakes and plant losses.
The difference between a basic hygrometer and a professional-grade monitoring system often comes down to four critical specifications that directly impact your ability to maintain ideal growing conditions. Let’s examine the essential features you should prioritize to guarantee accurate, reliable humidity monitoring in your greenhouse environment.
Accuracy and Calibration Options
When you’re selecting a humidity gauge, accuracy specifications like ±2-3% RH separate professional instruments from cheap alternatives, but calibration drift—up to 2% annually—means even the best humidity monitor needs regular adjustment.
Look for models supporting two-point calibration methods using reference points such as salt solutions, which align your thermometer hygrometer readings with humidity standards and maintain reliable temperature and humidity control throughout the growing season.
For best results, consider the importance of using accredited calibration practices to guarantee long-term instrument reliability.
Wireless Connectivity and Remote Monitoring
Beyond data encryption and cloud security, wireless sensor technology transforms your greenhouse management by delivering WiFi temperature readings and remote alerts directly to your smartphone, often from 200 feet away, while 2.4 GHz Wi-Fi range ensures reliable wireless connectivity even in humid conditions.
Remote monitoring platforms like Ecowitt and Ambient Weather use WPA2 encryption to protect your data and maintain sensor calibration accuracy across cloud-based systems.
Integrating wireless gauges provides data-driven operational optimisation for efficient greenhouse maintenance.
Data Logging and Export Capabilities
You’ll want data logging that captures readings at defined intervals—usually 0.1% RH precision—and stores them with timestamps for log analysis spanning 30 days to years.
Cloud logging services sync humidity and temperature data via Wi-Fi, offering CSV or Excel export formats for remote monitoring and spreadsheet analysis, while end-to-end encryption ensures data security across your environmental monitoring system’s sensor technology network.
Durability and Battery Life
Battery longevity in your humidity gauge determines whether you’ll enjoy two years of uninterrupted remote monitoring or face frequent replacement headaches.
Look for lithium-based rechargeable battery options with low-power WiFi temperature and thermometer hygrometer modules that deliver 12 to 36 months of runtime.
Sensor protection through IP-rated, sealed enclosures ensures energy efficiency while maintaining accuracy despite greenhouse humidity extremes, making low maintenance operation your reality.
Importance of Accurate Humidity Monitoring
Maintaining precise humidity levels in your greenhouse isn’t just about keeping your plants comfortable—it directly determines whether they thrive or struggle with stunted growth, disease, and pest infestations.
Accurate humidity monitoring determines whether your greenhouse plants thrive or suffer from stunted growth, disease, and pest infestations
When you monitor humidity accurately, you gain the ability to prevent problems before they start, fine-tune your climate control systems, and create an environment where plants can reach their full potential. Understanding why accurate monitoring matters will help you make informed decisions about sensor placement, calibration frequency, and system integration.
Impact on Plant Health and Growth
Your humidity gauge keeps your greenhouse climate control precise, directly shaping plant health and growth. Maintaining the ideal humidity range between 50 and 70 percent facilitates steady transpiration, ensuring efficient nutrient uptake from roots to shoots.
When humidity strays too high, leaf wetness risk climbs, while levels below 30 percent stress plants and slow photosynthesis. Temperature and humidity work together, so monitoring both prevents crop setbacks.
Disease and Pest Prevention
Precise humidity control acts as your first line of defense against fungal pathogens and pest invasions in the greenhouse. When leaf surface humidity exceeds 85 percent, fungal spore germination accelerates, while stable humid pockets invite botrytis and powdery mildew to thrive on vulnerable crops.
Disease Monitoring and Microclimate Analysis Through Your Humidity Gauge:
- Set alert thresholds at dew point crossovers to catch high-risk conditions before fungal spots appear on foliage
- Position sensors at canopy height in multiple zones to detect emerging microclimates that harbor pests and pathogens
- Maintain humidity barriers below 85 percent by correlating readings with ventilation cycles and dehumidifier operation
- Track daily humidity patterns alongside pest activity using color-coded sticky traps to time integrated pest management interventions effectively
Optimizing Climate Control Systems
Your humidity gauge transforms climate control systems from guesswork into precision, feeding real-time data into automated vents, dehumidification systems, and heaters that respond to exact thresholds.
By linking temperature and humidity readings to VPD control algorithms, you’ll trigger ventilation strategies only when needed, cutting energy costs while maintaining ideal growing conditions through integrated climate modeling that responds to changing weather patterns.
Installation Tips for Humidity Gauges
Getting a quality humidity gauge is just the first step—where you install it determines whether you’ll get accurate readings or frustrating false data.
The placement of your sensor can make the difference between spotting environmental issues early and missing critical humidity fluctuations that stress your plants. Let’s walk through the essential installation strategies that guarantee your gauge delivers reliable, actionable information from day one.
Ideal Sensor Placement in Greenhouses
Position your humidity gauge at canopy height, roughly 1.5 to 2 meters above the greenhouse floor, to capture the transpiration-driven microclimate where your plants actually live.
Mount sensors along the center of each zone, away from walls, hot equipment, and direct airflow patterns, ensuring stable readings that reflect true temperature and humidity conditions. For thorough greenhouse monitoring system coverage, distribute sensors evenly across distinct zones rather than clustering them.
Avoiding Microclimates and Skewed Readings
Once you’ve chosen your sensor placement, keep probes away from irrigation zones by at least 2 meters and use radiation shields to cut solar radiation impact by 60 percent, preventing radiant heat from skewing your humidity gauge readings.
Watch out for these common pitfalls:
- Direct sunlight or glass surfaces creating artificial heating that throws off temperature and humidity sensor accuracy
- HVAC vents forcing air that generates false humidity spikes in your monitoring system
- Reflective white walls altering nearby readings by 3 to 5 percent
- Condensation-prone corners where moisture accumulates on the sensor housing, triggering calibration drift
Using Multiple Sensors for Large Spaces
Commercial greenhouses covering more than 2,000 square feet demand strategic sensor placement to capture each climate pocket. Deploy one wireless sensor per 100 to 2,000 square feet depending on your ventilation uniformity, creating zone control that ties individual humidity gauges to dedicated exhaust fans. Data fusion software then averages readings while redundancy planning flags drift, and network optimization ensures your remote monitoring systems deliver real-time alerts across every bay.
| Greenhouse Size | Recommended Sensors | Coverage Per Unit |
|---|---|---|
| 100–500 sq ft | 1–2 sensors | 250 sq ft |
| 500–2,000 sq ft | 2–4 sensors | 500 sq ft |
| 2,000+ sq ft | 4+ sensors (zoned) | 500–2,000 sq ft |
Maintenance and Calibration Best Practices
Your humidity gauge won’t stay accurate on its own—it needs regular attention to maintain the precision you’re counting for.
Think of maintenance as preventive medicine for your monitoring system, catching small issues before they turn into costly crop problems. Here’s what you need to do to keep your gauges delivering reliable data season after season.
Cleaning and Battery Replacement
Maintaining your humidity gauge starts with basic battery care and terminal cleaning to prevent power failures that compromise your greenhouse monitoring.
Disconnect the sensor, neutralize corrosion with a baking soda solution on terminals, dry thoroughly, and apply dielectric grease for corrosion prevention.
Replace batteries using manufacturer-specified types, secure connections firmly, and test your thermometer hygrometer to verify proper operation before reinstalling.
Regular Calibration Routines
Usually, you’ll want to recalibrate your humidity gauge every three to four months because sensor drift accelerates in warm, moist greenhouse environments.
For highly variable climates, bump that schedule to quarterly checks, and use maintenance logs to track each session. Apply the salt test method with humidity standards near 75 percent, then adjust offsets through your thermometer hygrometer’s calibration tools to maintain precision across critical temperature ranges.
Verifying Gauge Accuracy Over Time
Over time, humidity sensors can drift by one to five percent relative humidity annually, so verification routines become your most reliable safeguard against creeping inaccuracy. To validate readings, compare your humidity gauge against a calibrated reference hygrometer at multiple humidity points—around 30, 60, and 90 percent RH—and log each outcome for trend analysis.
- Cross-check with handheld calibrated hygrometers during routine maintenance
- Flag divergent readings from nearby sensors using software-side thresholds
- Conduct full system verification yearly during stable weather periods
Integrating Humidity Gauges With Monitoring Systems
Modern humidity gauges don’t have to work in isolation, and connecting them to broader monitoring systems transforms how you manage your greenhouse environment. Whether you’re running a small backyard setup or a commercial operation spanning thousands of square feet, the right integration approach ensures you won’t miss critical changes in relative humidity or temperature.
Let’s explore three connection methods that extend your monitoring capabilities and keep you informed, even when you’re miles away from your plants.
Wireless and Wi-Fi Greenhouse Monitoring
You’ll find that Wi-Fi-connected devices bring greenhouse monitoring into the modern era, letting you track humidity and temperature remotely through cloud storage platforms that sync real-time data to your phone or laptop.
Wireless sensors like SensorPush reach up to 325 feet line of sight, while Ecowitt gateways connect eight separate nodes to one network, sending instant remote alerts when conditions drift beyond your thresholds.
Cellular Monitoring Solutions
Cellular networks solve the connectivity gap when your greenhouse sits beyond Wi-Fi range, using 4G LTE or LTE Cat M1 modules to transmit humidity data through industrial SIM cards that maintain signal in remote rural areas.
These wireless sensors push readings to cloud storage platforms that send SMS remote alerts the instant humidity or temperature crosses your thresholds, while rechargeable batteries and power management features keep monitoring uninterrupted during outages.
Using Signal Extenders for Large Greenhouses
When your greenhouse sprawls beyond router reach, a wireless signal extender bridges the gap through signal amplification and range extension, repeating transmissions from humidity gauges and WiFi temperature sensors up to 100 meters indoors.
Mesh networking models create uninterrupted wireless sensor networks across multiple zones, ensuring wireless reliability even when metal shelving or dense foliage causes attenuation, so your humidity monitoring stays connected.
How to Choose The Right Gauge for Your Needs
Selecting the right humidity gauge isn’t a one-size-fits-all decision, as your greenhouse’s specific characteristics, your monitoring preferences, and your budget all play vital roles in determining which model will serve you best.
The differences between traditional analog gauges, basic digital models, and sophisticated smart sensors can substantially impact both your initial investment and your long-term monitoring capabilities. Let’s examine three key factors that’ll help you narrow down your options and find the gauge that matches your operational needs.
Evaluating Greenhouse Size and Layout
Your greenhouse dimensions and configuration directly shape how many humidity gauges you’ll need and where you’ll mount them.
A small hobby greenhouse under 100 square feet usually performs well with one sensor positioned at canopy height, while larger structures over 2,000 square feet often require ten or more units to capture accurate microclimate analysis across different zones, ensuring your climate control systems and greenhouse automation systems respond to real conditions rather than isolated readings.
Comparing Smart Vs. Traditional Models
Smart models pull ahead when you need remote monitoring, automatic data export, and greenhouse automation systems integration, delivering 12-month battery life and real-time alerts via Wi-Fi or cellular networks.
Traditional gauges, by contrast, rely on manual checks and local displays, trading tech integration and user experience for lower upfront costs—though you’ll sacrifice cloud dashboards and efficient sensor comparison across multiple zones.
Budget Considerations and Value Features
When budget planning for your humidity gauge investment, you’ll find that basic analog units start around $10 to $20, while entry-level wireless greenhouse systems begin near $50 to $70.
Smart models commanding $130 to $300 deliver long-term investment returns through data logging and cloud storage that traditional gauges can’t match, making careful cost analysis and price comparison essential for matching greenhouse management needs to actual value assessment.
Frequently Asked Questions (FAQs)
What is a good humidity level for a greenhouse?
Most greenhouse crops thrive when you maintain relative humidity between 50 and 80 percent, though seedlings prefer the higher end around 70 to 80 percent while mature vegetables do well from 45 to 70 percent.
How do you measure humidity in a greenhouse?
You can’t just eyeball moisture in the air—digital hygrometers with capacitive sensors provide electronic readings of greenhouse relative humidity, while smart humidity sensors send remote data straight to your phone for monitoring.
What type of thermometer is best for a greenhouse?
You’ll want a digital thermometer with both temperature and humidity sensing, since monitoring relative humidity alongside heat is essential for preventing transpiration stress.
Models with ±2°F accuracy and wireless transmission let you track conditions remotely.
What humidity level causes mold in greenhouses?
High greenhouse humidity becomes a breeding ground for trouble when relative humidity climbs above 70 percent for extended periods, triggering mold prevention concerns and accelerating fungal growth that compromises plant health through poor moisture management.
Can humidity gauges measure soil moisture too?
Traditional humidity gauges measure air moisture, not soil content.
You’ll need dedicated soil moisture sensors using capacitance or TDR technology for root-zone readings, since soil probe calibration and moisture measurement methods differ fundamentally from air humidity sensing.
Do humidity spikes harm seedlings or cuttings?
Yes, sudden humidity spikes stress seedlings by slowing root development up to 20 percent and encourage damping-off fungus, while cuttings face increased rot and leaf edema if airflow remains poor during propagation.
How often should greenhouse humidity be checked?
During active growth periods, you’ll need to check greenhouse humidity at least twice daily to capture fluctuations from irrigation and transpiration, though unstable climate control conditions may require monitoring every four hours.
Are Bluetooth gauges better than Wi-Fi models?
Neither technology wins outright—Bluetooth offers longer battery life and simpler setup, while Wi-Fi humidity sensors provide remote greenhouse monitoring from anywhere and cloud data storage for your temperature and humidity logs.
Conclusion
Think of your greenhouse climate as an invisible orchestra—when relative humidity plays out of tune, every other instrument falters. Investing in reliable humidity gauges for greenhouses gives you the conductor’s baton, letting you detect microclimatic shifts before they escalate into crop losses.
Whether you choose wireless sensors with cloud logging or standalone hygrometers, consistent monitoring transforms reactive crisis management into proactive cultivation, protecting both your plants and your profit margins with data you can actually trust.
- https://www.umass.edu/agriculture-food-environment/greenhouse-floriculture/fact-sheets/reducing-humidity-in-greenhouse
- https://www.greenhousegrower.com/technology/three-steps-to-effective-greenhouse-humidity-control/
- https://drygair.com/blog/ventilation-dehumidification-or-fans-how-to-best-reduce-greenhouse-humidity/
- https://www.doctorgreenhouse.com/blog/climate-control
- https://pmc.ncbi.nlm.nih.gov/articles/PMC5339896/
