Feature:1. Removable battery design, making it easy to replace, ocnvenient for using.2. 35mm DIN rail mounting, easy to operate, great for household 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 to a week.6. Supports 24 hours / 7 days a week programmable.7. Large capacity built-in CR2450 battery for back-up the memory (save the programs you set) when power failure.8. Repeat programs with 16 on/off settings, and setting on/off manually.Specification:Condition: 100% NewItem Type: Timer SwitchMaterial: PlasticColor: As picture shownFunctions:Clock display(12hr/24hr format)TimerCountdown Power Supply: 5V DCCapacity: 16A Timing Range: 1min-168hoursPrograms: 16 ON/OFF per dayPower Consumption: <5VAAverage Error: <2S/dayTemperature Range: -10-50Humidity: <95%.Package List:1 x Timer Switch1 x InsturctionNote:This product is built‑in battery.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.