Programmable advanced preset one week ago. Digital electronic timer switch with daily program. Repeat the program using the 17 on/off settings and manual override function.Lithium battery power reserve when AC/DC power is cut off. AC/DC power supply available.This timer automatically corrects errors for 30 seconds per week. High precision, strong anti-interference ability,Easy to install. The timer adopts a panel mounting design and can be easily and firmly installed on the wall.Widely used, this timer switch can automatically turn on/off various electrical equipment according to the user's set time. Suitable for controlling many household appliances such as street lights, neon lights, production equipment, broadcasting and television.Specifications:Input voltage: 24VAC/DCRated voltage (output) of contacts: 220V to 250VAC 50/60HzLag: 2 seconds/day (25 degrees Celsius)ON/OFF operation: 17 ON/OFFPower: 7.5VA (maximum)Display: LCDMinimum interval: 1 minuteSwitch contact: 1 transfer switchPower supply: lithium batteryWorking temperature: -10C to+40CHumidity: 35~85% RHThe packaging includes:1 timing switch