Description: 30A load programmable weekly digital timer switch relay control time 7 automatic switching machine installed on DIN rail. The TM919B (30Amp load) DIN rail 7-day 24-hour programmable switching timer can automatically switch on and off electrical equipment at a preset time. It is widely used for 7 programmable control of street lights, signs, air conditioners, billboards, rice cookers, superchargers, injectors, dispensing machines, preheaters, agricultural facilities, and broadcasting equipment. The digital timer switch is built-in a 1.2V/40mA rechargeable battery to store the power-off program. It features low power consumption, high-precision CMOS chip, strong anti-interference, easy setting, and so on. Specifications: Model: TM919B Power Supply: AC220V Switching Contact: 1 changeover switch Procedure: on/off 16 times per day or week Minimum Interval: 1 minute Timing Range: 1min ~ 168hr Color: White Material: ABS + electronic components Average Error: 1s/24h, 25℃ Package Contents: 1 * Timer Switch 1 * User Manual Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.