for time and/or termperature controlled switching: :: Timeswitch mode: 3 different turn-on/off times in 24 hours :: Thermostat mode: termperature adjustable in 1°C steps between 0°C and 40°C :: Temperature/Timeswitch mode: combination between timeswitch and thermostat :: 130 x 55 x 77 mm, 225g :: 1m waterproof cable sensor :: 1 battery "AAA" included For more info ...Instructions