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 SwitchModel: TM621Power Supply Voltage: 50Hz AC220VConventional Thermal Current: Ith16ARated Working Current (Ie): AC-15 220V 3ATiming Error: No more than 1s / dPower: 1.5WDisplay: 1.6 Inch display large screenTiming Setting Range: 1 minute to 1 weekNumber Of Timing Settings: 16 groupsMechanical Life: Use no less than 30,000 timesElectrical Life: Use no less than 10,000 timesInstallation: Rail mountingBattery Type: Ni-MH batteryBattery Model: NI-MH40HBattery Nominal Capacity: 40mAhScope 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