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. High sensors: Industrial grade sensor chip, Sensitive and accurate detection Industrial grade: Temperature and humidity meter, Over limit alarm, High chip, 485 output signal 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 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., Manufacturer: Akfldms