Signature Series Sound Monitor 418 MHz Transmitter (SM5-SS) Accessories Model DB2-MC You have a

Model DB2-MC You have a visitor

Model SD4-MC  Where there's smoke

Assure yourself of power in case of an electrical failure with the Backup Battery Pack

Powered by two (2) AA batteries (included)

night stand or other flat surface

Signature Series Sound Monitor 418 MHz Transmitter (SM5-SS) Accessories Model DB2-MC You have aAlert 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