Retekess T111 Restaurant Pager System, Buzzers for Restaurant, 500M Long Range, Replaceable Sticker, 20 Food Buzzers for Food Truck, Church, Brewery

20 pcs can improve work efficiency; avoid staff chaos; keep social distance; pagers and beepers long range working distance up to 1640ft in open areas; widely used in restaurant; hotel; hospital; bar; club ^^ 3 reminde modes for food truck order beepers; vibration and flash; buzzer and flash; vibration and flash with buzzer; meet your needs of different occasions ^^ Long service time; each buzzers for restaurants built-in 3.7V 360mAh rechargeable battery; order ready buzzer can be fully charged in 2-3 hours; work about 24 hours after full charged ^^ Replace stickers; every restaurant vibrating pagers can replace photos on pagers and place your logo or specials ^^ Low battery reminder; blue light flashes when the server buzzer pager system are charging; when fully charged; blue light is always on and no longer flashes