Features Large capacity built-in battery CR2450 for back-up the memory (save the programs you set) when power failure. LCD digital display, LED indicator, reading is more intuitive and clear. Supports 24 hours / 7 days a week programmable. With countdown function, maximum 24 hours countdown to OFF. 16 ON/OFF programs per day, 15 combinations to a week. Specification:Condition: New Item Type: Timer Switch Material: Plastic Functions: Clock display(12hr/24hr format), Timer, Countdown Power Supply: 24V DC Capacity: 30A 5000W Timing Range: 1min-168hours Programs: 16 ON/OFF per day Power Consumption: <5VA Average Error: <2S/day Temperature Range: -10-50℃ Humidity: <95 Battery: CR2450 (Included) Application: Can automatically turn on and off various electrical equipment at preset time.It is widely used in street lamps, neon signs, lights, water heaters, air conditioners, billboards, rice cookers, superchargers, sprayers, bottlers, preheaters, agricultural facilities and broadcasting equipment. Package List:1 x Timer Switch1 x Manual Package List 1 x Timer Switch 1 x Manual