Signature Series Sound Monitor 418 MHz Transmitter (SM5-SS) Accessories Easy to install and connects

Easy to install and connects in seconds

Model SD4-MC  Where there's smoke

Easy to install and powered by the doorbell’s electrical circuit

neighbor or delivery person is at your door

Signature Series Sound Monitor 418 MHz Transmitter (SM5-SS) Accessories Easy to install and connectsAlert yourself to a babys cry, door buzzer, alarm clock or oven timer. Whatever the noise, the Signature Series Sound Monitor Transmitter will notify you of it. When a sound is detected, it broadcasts a signal to any Silent Call Signature Series Receiver. A delay circuit prevents activation by brief noises such as a slamming door, and a sensitivity control lets you adjust the sound threshold at which it activates. Fully portable, it operates on two AA