VIDEO INTERCOM DEVICE

摘要

Provided is a video intercom device for suppressing electric power consumption. The video intercom device adopts a configuration where the video intercom device switches between a first communication method by which an indoor master unit or a telephone master unit and a front door slave unit performs wireless communication under a predetermined condition, and a second communication method with electric power consumption lower than that of the first communication method, the first communication method is switched to the second communication method when the indoor master unit registers the front door slave unit, and the second communication method is switched to the first communication method when a telephone master unit registers the front door slave unit.

主权项

1. A video intercom device, comprising:
a front door slave unit; and an indoor master unit or a telephone master unit that performs wireless communication with the front door slave unit, wherein when the front door slave unit is registered in the indoor master unit, the indoor master unit transmits a switching requesting signal for switching to a second communication method with electric power consumption lower than that of a first communication method to the front door slave unit, and is switched from the first communication method by which a synchronous signal is periodically transmitted to the front door slave unit and a signal is periodically received from the front door slave unit, to the second communication method by which a signal is transmitted to the front door slave unit when necessary and a signal is periodically received from the front door slave unit when waiting, and wherein when the switching requesting signal is received, the front door slave unit is switched from the first communication method by which a signal is transmitted to the indoor master unit when necessary and the synchronous signal is received from the indoor master unit by periodically turning on a main power source when waiting, to the second communication method by which a signal is transmitted to the indoor master unit when necessary and a signal is received from the indoor master unit by periodically turning on the main power source when waiting.