Safety Technology International

The highly effective Wireless Exit Stopper is a wireless door alarm that can serve as an inexpensive security device and help stop theft by alerting you to any unauthorized exits or entries through emergency exit doors. If the protected door is opened, the electronic Exit Stopper emits a piercing 95/105 dB alarm and transmits a signal to an STI receiver. This wireless door alarm operates up to 1000' (line of sight), 433 MHz.