The digital chrono thermostat with 4 user programmes and 9 fixed programmes. Powered by 3 batteries High accuracy, easy to install (2 wires), easy to programme Operating voltage: 3 x AA LR6 1.5 V Battery life time: 3 ears Operating temperature: 0 °C to 50 °C. Output: Relay 8 A Setting temperature: 5 °C to 35 °C. Differential temperature 0.4 K Protection class: IP 30