Description: 30A 7 Days Load Programmable Weekly Digital Timer Switch Relay Control Time Automatic Switching Machine installed on DIN rail. TM919B (30A Load) DIN rail 7 Days 24 Hours Programmable Switch Timer can automatically turn on and off various electrical appliances at a preset time. It is widely used for 7-day programmable control of street lights, neon lights, signage, lamps, heaters, air conditioners, advertising signs, rice cookers, compressors, sprayers, bottling machines, preheaters, agricultural facilities, and broadcast equipment. The digital timer switch has a built-in 1.2V/40mA rechargeable battery to store the power failure program. It features low power consumption, a high-precision CMOS chip, strong anti-interference capability, and easy setting. Specifications: Model: TM919B Power Source: DC12V Switch Contact: 1 changeover Procedure: on/off 16 times per day or week Minimum Interval: 1 minute Time Range: 1min ~ 168 hours Color: White Material: ABS + electronic components Average Error: 1s / 24h, 25 ° C Package Contents: 1 * Timer 1 * User Manual Only the above package content is included; other products are not. Note: Light shooting and different displays may cause the color of the item in the picture to differ slightly from the real one. The allowable measurement error is +/- 1-3 cm.