| 摘要 |
PURPOSE:To make it possible to transmit an alarm without any erroneous operation by installing a water level detecting circuit within a bath room, and an alarming device and a driving circuit thereof at positions other than the bath room, and providing remote controllers therein respectively. CONSTITUTION:A water level detection circuit 23 contained in a remote controller 10 for controlling a bathtub and a buzzer driving circuit 24 contained in a main controller 17, are connected to each other by means of three remote control wires 25, 26 and 27. When a hot water fed tap 4 in a bath room 5 is opened, supply of hot water at a temperature set in a temperature setter 20 of the main remote controller 17 is started. Based on an electric signal between electrodes 14 and 15 for detecting the water level of a bathtub 6, the water level detection circuit 23 carries out an amplification operation, and the output of the water level detection circuit 23 is transmitted from the remote controller 10 for the bathtub to the main remote controller 17, and the buzzer drive circuit 24 is operated to generate a buzz from a buzzer 21. |
