1、This product can automatically switch on and off the power of various powered devices according to the time set by the user. 2、Suitable for the automatic control of street lamp, neon lamp, advertising sign lamp, production device, broadcast television device and other power devices. 3、Adopt high precision industrial grade chip for accurate timing control. 4、Built-in rechargeable battery is used as a backup power supply to maintain the timing, display and data storage in case of no external power supply. 5、ON/OFF time can be cycled by day or week, maximum 17 times ON/OFF per cycle. Features: 1. This product can automatically switch on and off the power of various powered devices according to the time set by the user. 2. Suitable for the automatic control of street lamp, neon lamp, advertising sign lamp, production device, broadcast television device and other power devices. 3. Adopt high precision industrial grade chip for accurate timing control. 4. Built-in rechargeable battery is used as a backup power supply to maintain the timing, display and data storage in case of no external power supply. 5. ON/OFF time can be cycled by day or week, maximum 17 times ON/OFF per cycle.   Specification: Model (Optional) TM616W-2 TM616B-4 Working voltage 220-240VAC 16VDC/AC Color White Black Control output 30A Number of settings 17 times ON/OFF (day/week) Time range 1min-168h Time-keeping error 1s/24h Power-off memory 60 days (built-in 12V rechargeable battery) Mounting method 35mm DIN rail Dimensions 80*56*36mm / 3.1* 2.2* 1.4in Package weight Approx. 200g/ 7.0oz   Package list: 1 * Programmable Digital Timer