Parameters: Supply voltage: AC110-220V Resolution: 0.1 °C at 9.999.9 °C, 1 °C at other temperature sections Temperature control range: -50°C ~ 120 Accuracy of temperature measurement: 0.1 °C TZT detection probe: 1m NTC waterproof probe Control precision: 0.1 °C Output capacity: output capacity of a 20A relay Environmental requirements: 10 °C ~ 60 °C, humidity 20%~85%