Doorphone Waterproof 2 Wires Talkback Doorbell House Door Entry Intercom System Kits

 WORLDWIDE TRADER

When visitors ring the bell from outside, the indoor telephone will ring. Picking up the indoor telephone,people can talk with the visitors while can also press the unlock button to unlock the door automatically, in that case people don't have to move to open the doors - DOOR LOCK NOT INCLUDED - Must be purchased separately!
.Two-lines Connected Intercom System
.Unlock fuction(Unlocking needs two other lines)
.The outdoor machine with aluminum ally shell is oxidation-proof and tear-resistant which makes it can stand wear and tear
.It can write the user's name and number on the outdoor machine, which has LED lights.
.With good quality of circuit to deal with the side tone which provides clear speaking voices
.The effective speaking distance is more than 100 meters(2*0.33 connected wire)
The length of effective speaking distance:
100M(2X0.3mm)
150M(2X0.8mm)
250M(2X1mm)
300M(2X1.2mm)

1:Microphone
2: Aluminium alloy shell
3:Rainproof cover
4:Authentic brand RL
5:Loudspeaker
6:LED lights(can write the user's name and number on the outdoor machine)
7:Call button