Wholesales handset audio intercom door bell

intercom doorbell 1. very cheap price 2, easy installation 3, very clear voice and long distance 4.with unlocking fuction

1. Introduction

This productcan be used in apartments, villas, hotels, offices, public buildings etc. two-way call and intercom.convenient customer visiting, and strengthening the safety, in the security base for your domestic outfit of a person of extraordinary powers curtilage, increase window.

 

2. Fuction

Internal line phone call the intercom, convenient operation. indoor without buttons, as long as hand up the microphone, can call outdoor , both sides of the clear communication,  there is two intercom calls such as special line,fashion and elegant appearance, installation is very simple, direct access 220V power supply ,the bell ring loudly and clearly.

 

As long as the extension cable conductor material is good, effective distance can be as high as 500 m intercom-1000 m , remain to be clear communication, the product quality is very reliable, low voltage power supply security communication convenient, it is  the first choice of realizing internal communication products.

 

Still can control unlock , and don't need to  run outside for opening door.

 

 

 

3. Installation wire requirements

 

 

100 m below : RVV4X0. 5 MM

100-200 m: RVV4X0. 75 MM

200-500 m: RVV4X1. 0 MM

4.Features

the indoor and outdoor unit are connected by two wires. the two wires are exchangeable.

long operating distance, loud and clear sound.

the electromotion-lock needn't to connect with extra power supply.

5.User's guide

connecting indoor unit with 220V power supply .

visitor presses the button on the outdoor unit,the indoor unit rings, host picks the handset up and talks with visitor, if necessary, host presses the unlock button, then the electromotion-lock is opened

6.Wire  connection

7.Picture show

 

Wholesales handset audio intercom door bell