Features [High precision] Repeat the 16-on and 8-off setting process accurate to the minute. [Easy to install] DIN rail installation, excluding DIN rail. [Simple and practical] Practical digital timeres, advanced presets one week in advance. [Easy to read] LCD real-time display of hours/minutes and ON/AUTO/OFF can be clearly displayed for users. [Easy to use] Digital electronic universal time switch with daily and weekly programs. Specifications: Input Voltage: AC/DC24V Contact Voltage Rating: AC 180V to 264V(50/60Hz) Load Capacity: 16A 250VAC(resistive load) On/Off Operation: 16 on and 8 off(manual/auto) Display: LCD Power: 4.5VA(max) Error: ≤2s/day(25℃)    Mounting Method: DIN rail(not included) Bound: 1 min to 168 hours Operating Temperature: -10℃ to 55℃ Size: 86 x 36 x 65mm / 3.38 x 1.41 x 2.56" Quantity: 1   Instruction: 1, When you use the timer switch for the first time, input AC and charge the inbuilt battery please, then press reset button. 2, The timer switch is at 24-hour mode as default. Press and hold "time" button(bottom left, next to "reset") for 5 seconds till it display "AM" to set to 12-hour mode. Press and hold again "time" button for 5 seconds to set back to 24-hour mode.   Package Includes: 1 x Timer Switch 1 x English Manual Package List