Description: 30A load programmable weekly digital timer switch relay control time automatic switch machine installed on DIN rail. TM919B (30Amp load) DIN rail 7-day 24-hour programmable switch timer can automatically turn on electrical equipment at a preset time. It is widely used for programmable control of street lights, signs, air conditioners, advertising signs, rice cookers, fast chargers, sprayers, bottling machines, preheaters, agricultural facilities, and broadcasting equipment. The digital timer switch has a built-in 1.2V/40mA rechargeable battery for power outages. It has the characteristics of low energy consumption, high-precision CMOS chip, strong anti-interference, easy setting, and so on. Specifications: Model: TM919B Power source: AC220V Switch contact: 1 changeover switch Procedure: on/off 16 times per day or week Minimum interval: 1 minute Time range: 1 minute ~ 168 hours Color: white Material: ABS + electronic components Average error: 1s / 24h, 25 C Package contents: 1 * Timer switch 1 * Manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3cm.