Features: 1Convenient and Easy to Use: Infinite loop switch you only need to set it once and you can always use it. 2Intimate Design for Addition and Subtraction: The value can be added or subtracted so don't worry about over adjusting. 3Exquisite Appearance: Beautiful appearance small size and values are clearly visible. 4Scope of Application: Power equipment and household appliances that need to be turned on and off regularly. 5Multi Function: Suitable for automatic control of power supply equipment such as street lights neon lights billboard lights production equipment radio and television equipment etc. Specification: Item Type: Time Control SwitchProduct Material: ABSRated Current: 16ATiming Error: 1 Second/DayTime Control Range: 1 Second -168 HoursNumber of Timing Groups: 16 GroupsBattery Type: 3V Rechargeable Lithium BatteryBattery Model: CR2450Battery Capacity: 520mAh (Built in Battery)Weight: Approx. 119g / 4.2ozScope of Application: Power Equipment and Household Appliances That Need to Be Turned on and off Regularly Package List: 1 x Time Control Switch1 xUser Manual Note: The switch should work in no humidity corrosion and heavy metal content gas environment please keep dry