Feature: 1. Suitable for street lights, factories, advertising signs, production equipment, radio and television equipment, stage and other power equipment that need to be turned on and off regularly. 2. With countdown function, the smallest interval is accurate to the minute. 3. Large 1.6-inch display, clearer, and easier to read. 4. Long service life, no less than 30,000 times for mechanical life, no less than 10,000 times for electrical life. 5. Din Rail installation, more convenient installation, saving time and effort. Specification: Item Type: Timer Switch Model: TM621 Power Supply Voltage: 50Hz AC220V Conventional Thermal Current: Ith16A Rated Working Current (Ie): AC-15 220V 3A Timing Error: No more than 1s / d Power: 1.5W Display: 1.6 Inch display large screen Timing Setting Range: 1 minute to 1 week Number Of Timing Settings: 16 groups Mechanical Life: Use no less than 30,000 times Electrical Life: Use no less than 10,000 times Installation: Rail mounting Battery Type: Ni-MH battery Battery Model: NI-MH40H Battery Nominal Capacity: 40mAh Scope Of Application: Street lights, factories, advertising sign lights, production equipment, radio and television equipment, stage and other power equipment that need to be turned on and off regularly.. Package List: 1 x Power Switch Timer 1 x English Manual