The Detex Battery Operated Door Prop Alarm is designed for applications where doors may be used but not held open. The door prop alarm sounds when a door is left open longer than the set time and ...

Door prop alarms are low-cost, desirable solutions to propped open doors. Helping keep energy costs down by ensuring the doors are closed, they also serve a vital security need. Sounding when a door ...

Eufy is a smart home technology company that makes everything from robotic vacuum cleaners and mops, to security cameras, video doorbells and, in the case of this review, alarm systems. This is a five ...