Wireless intercom is a system comprising 100 wireless extension units. It is completely wireless in the sense that the system does not use wires or cables for interconnectivity and it does not require any installation. Each of the 100 unit extensions has numbers from 1 to 100, each number is already coded and set to connect each other unit within 200 meters range.wireless intercom is built to suit our environment because it can work with or without electricity due to the inbuilt rechargeable battery that continues to power the units automatically for over 24 hours during power failure. This powerful and masterpiece technology is simply but ruggedly designed to suit any surface mounting both horizontally or vertically. This product is ideal for internal communication at homes, offices, hotels, schools, hospitals, etc.