The result is a functional intercom that you could use pretty much anywhere! The circuit to make two phones work as an intercom is extremely simple. You can see in the picture below, all you ...

If you own a house that was built in the 1970’s, you might still have the remnants of a home intercom system on the walls of each room. They were consider the end-all-be-all of “home ...

Zenitel is launching two new innovations for mixed-use building communication solutions: the Zenitel Display Door intercom (ZDD-1) and the Zenitel Slim Door intercom (ZSD-1). With 125 years of ...