1. Waterproof call button 2. 12V 23A battery for table call bell 3. 433.92mhz restaurant table call system 4. 3.7V Lithuium battery waiter watch
1. Service button with menu holder 2. 12V 23A battery for table call bell 3. 433.92mhz restaurant table call system 4. 3.7V Lithuium battery waiter watch
1. 433mhz waiter call button 2. 200M distance range in a open area 3. Use a 12V 23A battery 4. Colorful service call button