| 摘要 |
<p>PURPOSE:To acquire sure and stable radio communication without being affected of noise due to the operation of a monitor by not sending a radio signal which the operation monitor is in operation at time of the operation of an operation switch. CONSTITUTION:A display section 5 of the controller 2 displays a state of the controller 2 and a state of a hot water supply device main body 1. An operation monitor 8 informs the reception of the operation of an operation switch 3 or informs the operation state of the device main body 1 and a state of other controller 7. When the operation switch 3 is operated, a transmission reception section 4 generates a transmission signal and prepares the transmission to the device main body 1 to await the transmission command of a control section 6. The control section 6 monitors the operating state of the operation monitor 8 and confirms the inoperative operation monitor 8 to send a transmission command to the transmission reception section 4. That is, then the operation monitor 8 being a noise source is in operation, the transmission reception section 4 makes no transmission.</p> |
