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... LED highlight numerical dispaly Power source 5V/500mA Signal distance 1500m open area Pager size: 107*150*15mm Pager color Wine red Capacity number 1-9999 Battery 3.7V rechargeable battery Remind way Shake ...
...: 5V/500mA Display digital: LED highlight numerical display Size: 107*105*15mm Color: wine red Frequency: 433.92Mhz, ASK modulation Prompt type: shake, flicker and sound Power supply: 3.7V rechargeable ......
...Open area signal range 2500m Waterproof General waterproof Key name Service/Check/Cancel Weight 70g Advantages Customer will enjoy a wonderful experience The customers can easily call the waiter to place ini...