Wireless-Audio-Türsprechanlage für Büro & Zuhause inte

audio door phone Function Features 1.Using 2.4G ISM public frequency band: 2402-2483MHz 2.doorbell transfer data rate: 250K 3. Transmitting Power: Less then 20dBm(Less then 100mw), Receive Sensitivity: -100 or less 4. AFH technology, super anti-jamming capability, can share 2.4G band with wireless LAN and bluetooth devices 5. Panel a call key and two indicator lights: power indicator light(red) and operating light(green). 6. With configure Code function 7. Power supply: AC 110/220V, Electric Current: within 200mA 8. Communication distance: more then 500 meters in open land 9. This doorbell no adapter,but directly plug into electricity. Introduction 1. This intercom system is our own patent. 2. It works like the office intercom system but without switch machine 3. It absolutely free when you make the call in this system,we use the AFH techonology,super anti-jamming.It can support 5 pairs(at least)communication at the same time without interuption. 4.It can redesign the system recording your requirement for more people communicate Applicable Scope: 1. Office interoperate 2. Family interoperate 3. Workshop interoperate 4. Access messenges