Wireless table calling system 1 kitchen equipment 2 wrist watches 10 guest buzzer in 433.92mhz

Brand Name: Ycall
Model Number: K-999 K-300plus K-O3-Wblue
Product name: Restaurant wireless table calling system
Frequency: 433.92mhz
Range: 300-500M in open area
Button key: CALL;BILL;CANCEL
Watch Size: 50*41*16mm
Keypad size: 160*118*60mm
Certification: CE
Watch type: can show 3 groups calling number one time
Application: Restauant bar hospital hotel factory etc
is_customized: Yes