Fire Alarm Transm Combo-Shake-Up Rec-Vibrator-Dry

Designed to be wired into a home or building's existing fire alarm system, using a dry contact relay, and is operated by 2 AAA batteries (included). When the fire alarm is activated the transmitter sends a wireless signal to the Shake-Up Receiver with Vibrator up to 100 feet away. Should be installed by licensed fire alarm company. 5-year Limited Manufacturer's Warranty.