Features Removable battery design, it is easy to replace, ocnvenient for using. 35mm DIN rail mounting, easy to operate, great for household use. With countdown function, maximum 24 hours countdown to OFF. LCD digital display, LED indicator, reading is more intuitive and clear. 16 ON/OFF programs per day, 15 combinations to a week. Feature: 1. It supports 24 hours / 7 days a week programmable. 2. Large capacity built-in CR2450 battery for back-up the memory (save the programs you set) when power failure. 3. Repeat programs with 16 on/off settings, and setting on/off manually. Specification: Condition: 100% Brand New Item Type: Timer Switch Material: Plastic Color: As picture shown Functions: Clock display(12hr/24hr format) Power Supply: 12V DC Capacity: 16A Timing Range: 1min-168hours Programs: 16 ON/OFF per day Power Consumption: <5VA Average Error: <2S/day Temperature Range: -10-50℃ Humidity: <95% Package List: 1 x Timer Switch 1 x Insturction Package List 1 x Timer Switch 1 x Insturction