The RC812 temperature and humidity display instrument is a high-performance industrial temperature and humidity measuring instrument used to measure the temperature and humidity of the environment,and display them in digital form on this monitor.When the measurement data exceeds the limit,output control signals and sound alarm signals.Temperature and humidity instruments have the characteristics of small size,light weight,wide range,high accuracy,fast response speed,and good long-term stability They are widely used in environments, factories, warehouses, museums and hotels, climate stations, warehousing logistics, medical industries, and computer room temperature monitoring to measure temperature and humidity in the air. Industrial grade: Temperature and humidity meter, Over limit alarm, High chip, 485 output signal High sensors: Industrial grade sensor chip, Sensitive and accurate detection Over limit alarm prompt: Freely set the upper and lower limits of temperature and humidity alarms, and when the limits are exceeded,the instrument emit an alarm sound. Calibration function: Can freely calibrate temperature and humidity values according to needs, Adjustable range:-10-+10 -20-+20. Three installation methods: The product supports wall mounting, bracket placement, and wall mounting. Large ventilation hole induction: Real time precise measurement, There is a ventilation hole on the back, allowing air to come into contact with the sensor more widely, More sensitive sensing and more accurate data. Multiple scenarios available: Meet the needs of various scenarios 1. Production workshop 2. 3. Pharmacy 4. Warehousing 5. Farm 6. Flower House 7. Wine Cellar 8. Laboratory RS485 communication protocol: Can transmit signals to a computer for real-time monitoring, Synchronize device and PC information. Measurementrange:-40-80 , 0-99.9%RH Accuracy:0.32%RH Resolution:0.1 0.1 %RH Power cord length:1.5m Power interface: Type- charging interface Product size:328x233x35.5mm Color:As Shown Material:Plastic+Metal Package Contents: 1 * Digital thermometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.