motion sensors
Automated presence detectors
Motion sensors are devices that detect movement in a surrounding area, typically using infrared, ultrasonic, or microwave technology.
They trigger automatic responses—turning on lights, sounding alarms, or activating cameras: The motion sensors caught someone in the backyard at 3 a.m.
Common in security systems, automatic doors, and smart home devices.
- accelerometersDevices measuring rate of velocity change
- gyroscopesSpinning axis-orientation devices
- photodiodesLight-to-current semiconductor components
- transducersEnergy conversion devices
- infrared sensorsDevices detecting thermal radiation
body heat · magnetometers · proximity sensors · occupancy · smart home · autonomous vehicles · gaming consoles · passive · smart thermostats · wildlife tracking · alarm systems · environmental monitoring · wearable technology · microcontrollers · smart locks · security system · drones · lights
- securitysecurity guard, security cameras, alarm system, security system, lock
- garage itemsworkbench, car, shelving, tool chest, toolbox
- haunted attractionshaunted house, jump scare, haunted maze, jump scares, strobe light
- security systemsalarm, alarms, alarm systems, firewall, antivirus
- building systemsHVAC, plumbing, electrical systems, heating, cooling
- crime preventioncrime prevention, crime reduction, crime stoppers, crime hotspots, prevention programs
motion sensorspush buttons
Deliberately provoke irritation
toggle switches · pull cords · keypads · remote controls · timer switches