The digital electronics general purpose time switch can repeat programs with 16 ON and 16 OFF settings for different uses for flexible scheduling. Advanced preset one week before. Adjustment accuracy to the nearest minute. Built-in rechargeable battery and smart chip, allow to retain programming setting even in power failure. Specification: Voltage: 220V / 110 V / 12V / 24V (optional) Rated contact voltage: 180V-264V AC 50/60Hz Number of circuits: 1 changeover switch (SPDT) Error: 2S /day (25 Operation on/off: 16 times on and off (manual/auto) Power: 4.5 VA (max) Limit: 1 min 168 hours Backup battery: 15 days Minimum interval: 1 minute Load capacity: 16A 250VAC Mechanical life: 10^7 Electrical life: 10^5 Humidity: 35-85% RH Operating Temperature: -10 - 55 Mounting Method: 36mm DIN Rail Item Size: 87*64 *35mm/3.43*2.52*1.38in Packing List: 1 * Digital Timer Switch