1. Timer Switch: Timing Switch Can Be Turned On And Off Regularly, Allowing Home Appliances To Work Reasonably. 2. Switch Program: A Total Of 16 Switching Programs Can Be Set, Each Program Can Be Set To Cycle 1?16 Times, The Timing Range Is 1 Min To 168 Hours. 3. Data Preservation: The Electronic Timer Has Built In Battery For Program Power Off Memory, Which Can Save 60 Days Of Data Without Resetting. 4. Plug In Wiring: The Programmable Timer Is Plug In Wiring Design, Equipped With Instructions, Easy To Install And Use. 5. Wide Application: Suitable For Timing Control Of Street Lights, Advertising Lights, Electric Boxes, Water Pumps, Water Heaters, Chargers And Other Equipment. Spec: Item Type: Electronic Timer Model: Cn101A Material: Pa66 Built In Battery: Nimh Battery Zm40H 1.2V 40Mah Rated Voltage: Ac 220 240V 50/60Hz Or Dc 12V Voltage Limit: Ac180V 250V Hysteresis: ?1 Group/Day (25?) On Off Operation: 16 On 16 Off Power Consumption: 2Va (Maximum) Display: Lcd Service Life: Mechanial 10?, Electrically 10? Minimum Interval: 1 Minute Counting Completed: 1S 99Min 56S Resistive Load: 16A/25V Ac Hysteresis Load: 10A/250V Ac Lamp Load: 2000W Switch Contact: 1 Changeover Switch Environmental Humidity: 35 85%Rh How To Use: 1. Open The Package And Take Out The Product2. Connect The Wires According To The User Instruction3. Install And Adjust The Time To Be Used Packing List: 1 X Timer Switch 1 X User Manual