It is widely used in 7 days programmable control of streetlight, neon light (sign), lamp, water heater, air conditioner, billboard, electric cooker, booster, sprayer, bottler, preheater, agriculture facilities and broadcasting equipment etc. Din rail installation Advanced pre-setting one week before Digital electronics general purpose time switch with daily and programs Repeat programs with 16 on/off settings, 18 times pulse programs,and setting on/off manually Features: It is widely used in 7 days programmable control of streetlight, neon light (sign), lamp, water heater, air conditioner, billboard, electric cooker, booster, sprayer, bottler, preheater, agriculture facilities and broadcasting equipment etc. Din rail installation Advanced pre-setting one week before Digital electronics general purpose time switch with daily and programs Repeat programs with 16 on/off settings, 18 times pulse programs,and setting on/off manually Built-in battery for backup the memory when power failure Auto time error correction +/- 30 sec, weekly Built-in 1.2v /40mA rechargeable battery, high precision, industrial-grade chip, strong anti-interference. Specification: Delay range: each week or day according to the set program cycle, 1 minute ~168 hours Working voltage: AC220V/50Hz Working temperature: - 20~ 60 Switch capacity: 16A Programmable number: 8 switches/day Consumption power consumption:5W Timing error:2 seconds per day Installation: guide rail Battery cell: rechargeable battery Size: 86*36*65mm/3.4*1.4*2.6in Weight: Approx.136g/4.8oz Package list: 1 x15A Timer Switch