| 摘要 |
Alarm apparatus comprising a first element having a transmitter (118) and a water sensor (108); and a second element having a receiver (214) and alarm means (204); the arrangement being such that the transmitter (118) transmits a signal to the receiver (214), the signal being inhibited when the water sensor (108) is in contact with water and the alarm means (204) being actuated when the signal is not received by the receiver (214).
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