This linkman wireless Nurse Calling / waiter calling / server call paging system is gonna solve your problem.
Increase sales and improve service with easy to install plug & play and low maintenance.
Applications:
Tea or coffee house, spas and salons, health and fitness Clubs, restaurants,
hotel conference rooms, executive dining rooms, Saloon, nightclubs, bowling alleys,
massages house, churches, casinos, golf and country clubs, hospitals, health clubs, and offices
Model : LM-T900F ( Design and Made in Korea )
Color : Black(Default), Brown, White,White Green, White Red
Frequency: FM447Mhz
Service Coverage : 50 ~ 100 meter (164 ~ 328 ft)
Power : Battery CR2025 ( Approx 1.5 Year , Battery include)
Dimension : 58W x 58D x 8H mm (2.28 x 2.28 x 0.3 inch)
Model : LM-D302F + Manual + AC/DC Adapter + US/Canada AC Plug Type Converter ( Design and Made in Korea )
Mount Type : Wall Mount
Color : Black
Frequency: FM447Mhz
Service Coverage : 50 ~ 100 meter (164 ~ 328 ft)
Display : Display three groups of two-digit
A,b,C,d,E,F,G,H,I, j,L,n,o,P,q,r,S,t,U,v,0~9 => 01 ~ 99, A1, b9, F1....
Power : AC100~240V, Cord Type A and C (US, CANADA, Japan, Germany, Swiss, Israel, Italy ... )
Dimension : 280W x 119L x 32H mm (11.0 x 4.7 x 1.3inch)