Descriptions: The timer switch can automatically switch on and switch off various kinds of electric equipment according to fixed time Widely used to control the lamp, water heater, sprayer, bottler, preheater, agriculture facilities, broadcasting equipment,home appliance, etc Features: 1. DIN Rail Installation. 2. Advanced pre-setting one week before 3. Digital electronics general purpose for time switch daily and weekly programs 4. Repeat programs with 16 ON/OFF setting 5. To-the minute setting accuracy 6. LCD displays real for time to Hour/Minute and ON/AUTO/OFF Specification: Rated Voltage: 16A 220V AC, 50/60Hz Work Temperature: -10C - 55C Power: 4.5VA(max) Internal Battery: 1.2V/40mA(Rechargeable battery) Battery Backup: 15 days Display: LCD for Time Range: 1 min-168 hours Minimum Interval: 1 Min Power Cut Memory: 60 days for Time Error: 1s/24h 25C On/Off Operation: 16 On & 16 Off Size: 86.5x36x65.5 mm/3.41x1.42x2.58" Installation: Rail Quantity: 1 Set Note: Please allow 1-3mm error due to manual measurement.pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents: 1 x Digital Timer Switch 1 x User Manual