Notes About This Item: These are new/unused. Here is a Youtube link that demonstrates it https://www.youtube.com/watch?v=TtsdK4ZCZ1E
Notes from Amazon:
This siren alarm can be paired with up to 40 water leak detectors and 10 remote controls. The sound is up to 115 dB, and the transmission distance is 100m.
It features arm, disarm, SOS, and test buttons. The 433 MHz wireless signal and 90 dB alarm come with two sensors and two remotes.
The alarm can be used for drip and overflow detection.
