Feature: 1. With real time display function, can automatically turn on and off the power of various power supply equipment according to the time set by the user 2. The LCD screen will display the hour/minute and on/auto/off in real time, which is convenient for you to identify easily 3. Digital electronic universal time switch with daily and weekly programs, which can well meet your daily use needs 4. Built in rechargeable battery and industrial grade chip. with stable accuracy and strong jamproof ability 5. Has a wide range of uses and is suitable for automatic control of power devices such as street lights, advertising signs, radio and television equipment, etc Specification: Item Type: Timer Switch Commodity Material: ABS Working Voltage: DC12V/50-60Hz Timing Error: ≤2 Seconds/Day Display Device: LCD Minimum Setup Time: 1 Minute Internal Battery: 1.2V40 Mah (rechargeable battery) Battery Type: Ni-mh Battery Countdown: 1 Second~99 Minutes and 59 Seconds Ambient Temperature: -10~+40℃ Relative Humidity: 35-85%RH Installation Method: Screw Installation or Rail Installation Purpose: the Product Can Automatically Turn on and off the Power of Various Electrical Equipment According to the Time Set by the User. Suitable for Automatic Control of Power Devices Such As Street Lights, Neon Lights, Advertising Signs, Production Devices, Radio and Television Devices, Etc. Production Equipment, Radio and Television Equipment and Other Power Equipment and Household Appliances That Need to Be Turned on and off Regularly. Package List: 1 x Timer Switch1 x User Manual Note: Shipped with Built in Battery