30A 7-Day Load Programmable Weekly Digital Timer Switch Relay Control Time Automatic Switching Machine DIN Rail Mounted. TM919B (30A Load) DIN rail 7 Day 24 Hour Programmable Switch Timer can automatically turn on and off various electrical appliances at a preset time. It is widely used for 7 days programmable control of street lights, neon lights, signs, lamps, heaters, air conditioners, advertising signs, rice cookers, compressors, sprayers, tapping machines, preheaters, agricultural facilities, and broadcast equipment. The digital timer switch is built-in with a 1.2V/40A rechargeable battery.mA to store the program in case of power failure. It has the characteristics of low power consumption, high-precision CMOS chip, strong anti-interference, easy setting, etc. Specifications: Model: TM919B Power Source: AC220V Switching Contact: 1 changeover Procedure: on/off 16 times per day or week Minimum interval: 1 minute Time range: 1min~168hr Color: white Material: ABS + electronic components Average error: 1s/24h, 25°C Package Contents: 1 * Timer 1 * User Manual Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement allowed error is +/- 1-3cm.