Features: 1. Removable battery design, easy to replace, convenient to use. 2. 35mm DIN rail mounting, easy to use, ideal for home use. 3. With countdown function, maximum 24 hours countdown to OFF. 4. LCD digital display, LED indicator, reading is more intuitive and clear. 5. 16 ON/OFF programs per day, 15 combinations per week. 6. It supports 24 hours/7 days a week programmable. 7. Built-in large capacity CR2450 battery to backup memory (save the programs you set) in case of power failure. 8. Repeat programs with 16 on/off settings and manual on/off setting. Specifications: tat: 100% Brand New Item Type: Timer Switch Material: Plastic Color: As picture shown Functions: Clock Display (12h/24h format) Timer Countdown Power Supply: 12VDC Capacity: 16A Range time delay: 1min to 168hours Programs: 16ON/OFF per day Power consumption: Average error: Temperature range: -10 -50 Humidity: Package list: 1 timer switch 1 instruction Note: 1. This product includes a battery.2. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.