1. Adopt the latest PID algorithm, fast self-tuning, no overshoot, accurate temperature control 2. The welding shape is resistant to falling and stable 3. Fahrenheit and Celsius can be set freely 4. Relay output 5. Suitable for various occasions that require temperature measurement and temperature control, such as bathrooms, greenhouse vegetables, hatcheries, etc.-----------------------Product type: thermostat: BERMModel: CHB401Working voltage: AC180-240 (V) 50HzControl type: temperatureControl method: intelligent temperature control regulatorTemperature range: 0-400Input signal: K-type thermocoupleOutput: relayTemperature measurement error: 1 ()Accuracy level: 0.5Working environment: 0-50Environmental humidity: 35-85%Hole opening size: about 45 x 45 mm / 1.8 x 1.8 inchesInstallation type: embeddedSize: about 48 x 48 x 86 mm / 1.9 x 1.9 x 3.4 inches-----------------------1 x thermostat 1 x Chinese user manual1 x English user manual