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Safety Technology International, Inc. Sti-6400 Exit Stopper Multifunction Door Alarm, Helps Prevent Unauthorized Exits Or Entries Through Emergency DoorsSafety Technology International, Inc. - STI 6400 Exit Stopper Multifunction Door Alarm. Helps prevent unauthorized exits or entries through emergency doors. If the protected door is opened, the ele..

Knock Knock Wireless Door Chime With Vibration Smart SensorHave a hard time hearing when guests arrive because you just can't hear them knocking? Change all that with the Knock Knock Wireless Door Chime. This sensor and receiver set automatically chimes when someone is knocking at your door, alerting you to their arrival. To use, simply attach the ..