door alarm
Intrusion detection device
A door alarm is a security device that sounds when a door is opened, typically using a magnetic sensor that detects separation between door and frame.
Door alarms range from simple battery-powered units to components of comprehensive home security systems.
They're also used in retail to prevent shoplifting and in care facilities to alert staff when patients wander: The door alarm went off when he tried to leave the memory care unit.
- securityProtection from threat
- home securityMeasures defending a residence
- security systemEquipment preventing unauthorized access
- armed responseWeaponized security reaction
- sensorInput-detecting device
motion sensor · entry · entry point · buzzer · chime · intruder · motion · trigger · beep · alert · keypad · armed · breach · siren · warning · detector · burglar · break in
- securitysecurity guard, security cameras, security system, lock, safe
- alarmsalert, siren, klaxon, claxon, air raid siren
- Entry Securitysmart lock, deadbolt, keyless entry, electronic lock, keypad lock
- hardwarehinge, lock, latch, screw, bolt
- protectionbodyguard, armor, gloves, security guard, shield
- safety equipmentlife jacket, safety glasses, lifeboat, life raft, fire extinguisher
door alarmdoor lock
Device securing an entrance
deadbolt · lock · door chain · padlock · bolt
door, alarm, doors, doored, doorway, doorways, doorman, doormen, doorstep