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Communication data signals between the phones are passing through earth/ground and neutral  wire which is common to all building or different building. This model intercom system required ground/earth connection for working. You can use the same building earth wire for this model intercom. since we are using earth and neutral wire for exchanging data between the phones, It will provide digital clarity conversation even if in different phase line and different circuits. All models like Hot line intercom, Master Salve Intercom, Door phone systems, Multi-line intercom are available in earth wire intercom systems.
Installation of earth wire intercom model: Insert the three pin AC power cord in to the 90~250-volt AC outlets. Now the system is ready for communication. You can use this model even if in different phase line under one power distribution transformer.

LIMITATION : If power supply neutral wire grounded in your building, intercom not work to out side of the building or in between building.
 Connection Diagram

Ideal for :
Apartments, housing colony, housing villa, multi-story building, offices, Banks, Factories, work site, etc.   
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Two station wireless Intercom




Earth wire Intercom

Wireless Intercom Call Transferring

WirelessIntercom Call Dialing

Master slave intercom upto 1000 lines

Wireless Multi Channel Intercom

Car Vehicle Intercom System
Wireless Security Apartment Door Phone
Earth wire intercom

Installation of the system is very simple. Just plug intercom into the 100~240V ac outlet in the required places, now the system is ready for communication. you can shift the system as and when, where ever you need, yourself easily
. If you are not in same transformer, we have also single core wire wired intercom systems.  More details click on models.
Common Features:

Wireless Operation Intercom through electric power line Digital automatic channel selection (no manual switch)Works on 90~240V AC Power line Different Channel Different Security Code Long Range (up to 2KM, 6000 ft.) Up to 1000 StationsDigital wireless intercom FM Technology Full duplex  Conversation (no push to talk) Original Ring Back Tone 50~250 Volt SMPS power supply One Year Warranty

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What is wireless Intercom?    Diagram of wireless intercom systems !     PC Based Oscilloscope Guest Book

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