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STABLE AND CLEAR: Contain 1 outdoor receiver and 1 indoor transmitter, talk in a wide range through wireless connection, stable transmission signal

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Our oice intercom door bell is the pioneer product in this industry, can be applied to house, factory, hotel, hospital, super market and office. Protable and beautiful, conenient to use. Frequency of Doorbell is in line with the national regulations, will not produce harmful electromagnetic interference. This intercom doorbell has low power consumption, long standby time for outdoor-bell up to six months. Big and adjustable speaker, clear oice, can be used as mobile interphone.

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1 receiver and 1 button, the receiver and the button can communicate in a wide range through wireless connection (outdoor bell: 200m indoor bell

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Just bought a Ring doorbell but I have no idea how to install it to my old intercom. Any help much appreciated! : r/diyelectronics

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