Issue a warning before the door gives way
A standard door sensor is triggered once the door is open—that is, once the intrusion has already occurred. The Ajax DoorProtect Plus adds two sensors that detect the attempt itself.
Three separate detections
- Opening — the sash moves away from the frame
- Shock — the door or window is being struck
- Tilt — the sash is moved, forced, or unhinged
For indoor use; available in white and black.
What This Changes
The alarm goes off during the attempt, not afterward. For a front door or a French door, those few seconds often determine whether the break-in is successful.
Tilt detection covers a scenario that other sensors overlook: an up-and-over garage door or a door that has been lifted off its hinges without ever being “open” in the traditional sense.
Where to prioritize it
On the most exposed entry points—the front door, ground-level French doors, and rear entrances that are not easily visible from the street.The standardAjax DoorProtect is sufficient for secondary entrances.


