1、Low power consumption,less than 1W of power consumption is more energy-saving. 2、It has a inner battery to save the data,you do not need to worry about losing data. 3、Manual and automatic settings, up to 16 times of on and 16 times of off each day. 4、Switching time can be cycled by day or week. 5、The controlling time range from 1 minute to 168 hours with a low error of 0.5s each day. Features: Low power consumption,less than 1W of power consumption is more energy-saving. It has a inner battery to save the data,you do not need to worry about losing data. Manual and automatic settings, up to 16 times of on and 16 times of off each day. Switching time can be cycled by day or week. The controlling time range from 1 minute to 168 hours with a low error of 0.5s each day. Specification: Voltage: AC220V±15% Switching Capacity :Resistive 25A, Inductive 20A Power Consumption:<1W Inner battery for saving data. 16 times on and 16 times off each day by manual or automatic. Switch time can be circled by day or week. Control Time: 1minute~168hours Temperature:-20~60℃ Error:less than 0.5s/day Humidity:< 95% Size:100 * 55 * 45mm / 3.9 * 2.2 * 1.8in Package List: 1*Programmable Timer