| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a remote-control system with an intercom function which detects sound pressure for automatically switching the call direction, and further changes a call lamp state of lighting during a session to clearly indicate a call state of transmitting and a call state of receiving. <P>SOLUTION: In this remote-control system 10 with the intercom function provided with an intercom device 20 provided with a first and a second remote- controllers 12 and 13 provided at a separate place for remote-control of a hot water supplier 11 for detecting sound input from a first and a second microphones provided at each of the first and the second remote-controllers 12 and 13 and automatically switching the call direction from one to the other, a call switch 32 for starting the intercom function is provided at the first and the second remote-controllers 12 and 13, the call lamp 33 indicating the state of call is provided at the first and the second remote-controllers 12 and 13, and the lighting state of the call lamp 33 is changed between the call state of transmitting and the call state of receiving. <P>COPYRIGHT: (C)2003,JPO</p> |
