Emergency Door Alarm with Remote Wireless Monitoring
The Wireless Exit Stopper is a unique and highly effective way to alert you to any unauthorised exits or entries through emergency exit doors. This exit door stopper can also serve as an inexpensive security device and help prevent theft as well.  If the protected door is opened, the wireless door alarm emits a piercing 95/105 dB alarm when a protected door is opened and sends a wireless signal to an STI receiver. Operates up to 300m (line of sight), 433 MHz.