security alarm
Triggered by break-ins
A security alarm is a system that detects unauthorized entry or other threats and alerts occupants or authorities through loud sounds, flashing lights, or electronic notifications.
Home and business alarms typically monitor doors, windows, and motion: The security alarm went off when someone opened the back door.
The term covers everything from simple door chimes to sophisticated monitored systems.
- burglarOne who breaks in
- sirenWailing alert device
- motionChange in position
- motion detectorDevice sensing nearby movement
- sensorInput-detecting device
intruder · panic · keypad · armed · triggered · blaring · wailing · break-in · entry point · detector · surveillance · monitoring service · monitored · flashing · strobe · warning · protected · zone
security alarmopen door
Barrier removed for entry
breach · blind spot · security breach · point of entry · welcome mat
security, alarm, secure, securely, insecure, insecurity, securities, securing, secured