place table easily, just press one button, waiter will supply service with u soon and better quality by wireless calling butto

FeaturesWireless Call BellSend call signals without wiresCompatible with all main unitsWork with GDH100, GDH400, GDH500, GDH300Long Life of BatteryOne year 50 calls in a dayBenefitsEasy to be placed on the tableSomeone who needs to be serviced could press the button to get attendantMaintenance FreeEnhanced designed for durabilityAntenna exteriorSingle circuit designUsabilityMulti-colored cases.

SpecificationsPhysical Dimension 120x85x55(mm)Weight 210.5g (With battery, Stand)Control Single call buttonOutput Power 20mWFrequency Band 315MHzModulations ASK (AM)Transmission Range 500 meters free fieldBattery 9V 6F22 laminated cellBattery life 1 year (50 calls in a day)Operating RangTemperature Rang:-10 °C to 50 °C for 1 hourHumidity Range: 95% relativehumidity for 4 hours

wireless service calling system