This programmable radiator thermostat is used to control the conventional radiator valves. With the radiator temperature controller,you can conveniently regulate the room temperature thanks to pre-programmed or individually tailored heating and cooling phases the desired temperature can be comfortably adjusted. Three work modes design automatic mode( Auto), manual mode( Manu) and holiday mode(O), , you can press Mode/Menu button to select the work mode according to your demands. Support set system year, month, day, hour, minute. You can have a try. Note: Only operate the device in inside rooms and avoids the influence of humidity, dust and sunlight or external heat radiation. Specifications: Name: Intelligent Temperature Controller Material: ABS Battery: 2 * 1.5 V LR6/Mignon/AA battery (included) Current consumption: 100mA (max.) Ambient temperature: 0 to 50 Surface temperature: 90C (at the radiator) Interface: M30 * 1.5mm Linear travel: 4.3mm Item size: 103 * 54 * 60mm / 4.06 * 2.13 * 2.36in Item weight: 180g / 6.35ounce Package size: 110 * 65 * 60mm / 4.33 * 2.56 * 2.36in Package weight: 280g / 9.88ounce Packing List: 1 * Intelligent Temperature Controller