Features The design of the removable battery is easy to replace and convenient to use. Built-in large capacity CR2450 battery to secure the memory (storing the programs you set) in the event of a power failure. With countdown function, maximum 24 hours countdown to off. It supports programmable 24 hours/7 days a week. 16 on/off programs per day, 15 combinations per week. Repeat programs with 16 on/off settings and manual on/off 35mm DIN rail mounting, easy to use, ideal for home use. LCD digital display, LED display, the reading is more intuitive and clear. Specification: Item Type: Timer Material: plastic. Color: As picture show Functions: Clock display (12 hour/24 hour format). timers countdown Power supply: 12 V DC. Capacity: 16 A. Time range: 1 minute to 168 hours. Programmes: 16 on/off per day. Power consumption: <5 VA. Average error: <2S/day Temperature range: -10-50℃ Humidity: <95%. Function: 1. It supports programmable 24 hours/7 days a week. 2. Built-in large capacity CR2450 battery to secure the memory (storing the programs you set) in the event of a power failure. 3. Repeat programs with 16 on/off settings and manual on/off Package list: 1 x timer switch. 1 x instruction manual Note: 1. This product contains a battery. 2. Please note that the new and old type of this product will be sent at random. Please make sure you do not mind before ordering. Package List 1 x Timer Switch 1 x Insturction