1. just press one button, waiter will supply service with u soon. 2.esay operation
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 call system
