Seco-Larm E-931CS22RFCQ Wireless Reflector Beam Entry Alert Door Chime. No Batteries, Wir...
$94.99The BALERT-W is a wireless break beam sensor-based entrance alert kit that is easy to set up and easier to maintain. The most common use of this system is to use the system to monitor a doorway. When a visitor passes through the monitored zone, the speaker is triggered.