General description The W3230 Mini Digital Temperature Controller is a versatile thermostat regulator designed for precise temperature control. It features a clear LED display and is capable of managing various high-power loads with its 20A relay output. This device is suitable for a wide range of applications, ensuring accurate temperature regulation from -50℃ to 110℃. Technical specifications Power supply voltage: DC5V/12V/24V AC100-220V Temperature control range: -50℃~110℃ Resolution: 0.1℃ at -9.9~99.9℃; 1℃ in other ranges Temperature measurement accuracy: 0.1℃ Sensing probe: 1 meter NTC waterproof probe Output capacity: 20A relay Environmental requirements: -10℃~60℃, humidity 20%~85% Dimensions: 79mm x 43mm x 26mm Usage Connect the power supply and equipment to power the controller. The measured temperature will be displayed on the screen. Press the SET button to adjust the desired temperature; the display will flash. Confirm the setting by pressing SET again. The controller will automatically operate the relay based on the set temperature. Indicator light: Flashing indicates a delay in starting cooling or heating; steady light indicates the relay is closed. Digital display codes: LL indicates the sensor is open, HH means the relay is disconnected, and --- indicates a high temperature alarm.