Measurement range (built-in sensor): -20 ℃ -70 ℃/0-100% RH
Measurement range (external sensor): -40 ℃ -85 ℃/0-100% RH
Resolution: ± 0.1 ℃ (temperature)/± 0.1% RH (humidity)
Sensor: Swiss factory packaged integrated temperature and humidity sensor
Communication interface: None
Software: None
Battery: 9V alkaline or carbon battery * 1
Power supply: 12V DC, power adapter is an optional item.
Alarm: Built in buzzer alarm, each channel can set alarm upper and lower limits

①. Stable and reliable, with high measurement accuracy, comparable to imported products from the United States, but more convenient to use.
②. Monitor through CTI and authoritative institutions such as Shenzhen Institute of Metrology and Shaanxi Institute of Metrology.
③. The setting can be completed through buttons, with powerful functions and protection for the site.
④. It can be smoothly upgraded to recorder products with the same accuracy and recording function.

①. Press the Menu button to enter the setting mode, where you can modify the upper and lower limits of the alarm, set the alarm switch, and set the temperature unit (℃ or ℉).
②. After setting up, place the temperature and humidity meter in the location to be tested.
③. Press the MAX/MIN key to view the maximum and minimum temperature and humidity values since turning on the device.