Convenient for guests. After ordering, guests can rest in an empty seat without having to wait in line at the bar The transmission distance is extremely long, up to 500m. Guests can sit anywhere in the store or walk around waiting for the pager to remind them to pick up their meals The pager is made of ABS engineering plastic material, military quality, exquisite workmanship, sturdy, anti-fall, long service life, saving shop costs Due to the use of wireless queuing system, using wireless radio frequency technology, millions of learning codes. The system includes a 998-channel call keyboard and a portable buzzer. The call board has 24 battery charging slots. Each receiver can be charged and marked with a number Widely used in various commercial occasions such as restaurants, coffee shops, and milk tea shops Specification: Transmitter: Input power: DC 9V/1A Transmitting frequency: 433MHz Transmitting power: +23dbm Standby power consumption: Less than 600mW Modulation mode: OOK Number of charging handsets: 24 Number of compatible handsets: 998 Key mode: touch key Receiver: Working voltage: 3.7V 200mAh lithium battery Receiving frequency: 433MHz Standby current: Less than 12mA Standby time: 20h Receiving sensitivity: -108dbm Transmission distance: 500m Reminder mode: vibration, beep, flashing light Reminder time: 1-999 seconds can be set Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on Voltage: AC100-240V Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines,Taiwan and so on. Voltage: AC110V Plug Type:UK plug,it applies to Malaysia, the United Kingdom and so on. Voltage: AC230V Color: As Shown Material: ABS There may be differences in the printed words, which will not affect the use Package Contents: 1 x Transmitter 24 x Receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the pic