2.4Ghz Wireless Voice Caller Long Distance Audio Door Phone Intercom 500m Range Two Way Call Auto Answer 1000mAh Battery

Specifications Battery capacity 1000mAh lithium batteryCharging Voltage DC5VOperating temperature 20 to 55 degreesTransfer distance about 500 m partition 20 100 m floor 1 8Operating frequency 430MHz 490MHzWorking time about 30 days to use the full chargeCharging time about 5 hoursRingtones 3 songsSize 116x56x18mmFeatures 1 Full duplicate communication call like a phone call2 Automatic response The receiver does not need any operation direct communication3 One click to speak after pressing the dialog key speak directly the other person can hear4 Two way ringtone call ringtone 5 Call empty distance test 500 meters theoretical Floors 1 to 8 6 Thin appearance Thickness is only 18mm the thickness of similar products on the market is more than 22mm holding a hand feeling 7 Battery 1000mAh polymer lithium battery working 5 times a day according to normal 30 seconds at a time working for about 30 days 8 Button adopts plastic silicone structure surface high light UV process super handy In contrast to peers the use is all rubber buttons no grade and feel 9 Intelligent and humane design with intercom lamps and power lamp display customers at a glance 10 Normally put on the charging seat when on standby intelligent charging never power off Package Includes 2x Wireless Voice Caller 3x Wireless Voice Caller