ROOST RDW-320 WIRELESS ENTRY SENSOR DOOR WINDOW DETECTOR SECURITY360 HOME SYSTEM
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Motion, door/window and glass-break sensors are the trip-wires of a security system. Check what hub or panel they pair with (many are brand-specific and won't mix), wired vs wireless, and battery life for wireless units. For motion sensors, pet-immune designs avoid false alarms. Buying spare or used sensors is fine — just confirm the protocol and that they're compatible with your system.
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
ROOST RDW-320 WIRELESS ENTRY SENSOR DOOR WINDOW DETECTOR SECURITY360 HOME SYSTEM
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
110 dB Water Alarm with Detachable Sensor - Ultimate Leak Detection Solution
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Custom Chime Solar Driveway Motion Alarm with Long Range & Rechargeable Battery
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Acuity Controls NCm ADCX Auto Dimming Photocontrol Ceiling Mount Sensor
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
GE Smart Home Security Magnetic Window Alarm No Wiring Needed New Old Stock
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Wireless Motion Sensor Alarm with 4 Sensors and 1 Receiver for Home Security
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Control Products Freeze Alarm FA-I-CCA with Sensor and AC Adapter
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Solar Sound & Strobe Light Alarm Motion Detector 130DB Gunshot Dog Barking Siren
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
CM PDT 10 Extended Range, Dual Technology Ceiling Mount Occupancy Sensor, White
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Sensorswitch Bracket,For Occupancy Sensor WV BR Sensorswitch WV BR 745975810109
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Remote Control Replacement ARC433A26 Air conditioner Remote Control for Daikin
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Perfect Security Alarm for Home Doors & Windows 4 pcs -90 dB- Item Brand NEW
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Battery Sensor Compatible with Honda Accord 2018-2021 CV 38920-TVA-A02
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Sensor Switch CM 10 Passive Infrared Extended Range Ceiling Mount Occupancy...
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
NEW DSC PG9935 Wireless Shock Sensor
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Light Angel motion activated stick up LED light
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
NEW Bosch ISC-PDL1-WA18 Professional Series TriTech AM Motion Detector
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Honeywell DT8035 Dual TEC Motion Sensor Detector
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
New Defiant 270 Degree Replacement Motion Sensor, Bronze, 1002 314 998
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Honeywell FG1625RFM 1 Large Cover Only
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Solar Driveway Alarm Wireless Outdoor Motion Sensor Weatherproof Alert
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
MC-52 NC Alarm Rolling Gate Garage Door Contact Magnetic Reed Switches
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
SimpliSafe 1st Generation ES1000 - Door / Window Entry Sensor/magnet (20 Avail)
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Defiant - 110 Degree White Motion Sensing Outdoor Security Light
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
MANARAS OPERA Photoelectric Sensor photo eye for garage door PHOTO0065 TK8202
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Philips Home Security: A Two-Pack of Battery-operated Window and Door Alarms
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Pro Driveway Alarm Home Security Alert System 4 Volume Level PIR Motion Detector
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
White Power Saving Indoor Shop Welcome Doorbell with Burglar Alarm Function
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Driveway Alarm Sytem Wireless Long Range Outdoor Weather Resistant Motion Sensor
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Wireless Indoor Security Chime Intruder Alarm PIR Motion Sensor Anti-Theft 2 Set
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Door Window Alarm Home Security Wireless Magnetic Sensor Burglar Anti-Theft 2PK
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Home Driveway Bell Infrared Motion Sensor DIY Pairing Wireless Remote Control ×1
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Motion Sensor Light Switch - Hands-Free Control for Laundry & Garage Spaces
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Wireless Electrical PIR Motion Sensor Alarm Indoor Long Range Entry Doorbell 2*
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Maestro Motion Sensor Light Switch - Smart Automation for Home Efficiency
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
2x Wireless Door Bell Motion Sensor Detector Gate Welcome Chime Alert Alarm 280m
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Cisco Meraki MT20-HW Cloud-Managed Indoor Open/Close Door Sensor Unclaimed NEW
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Honeywell Intellisense FG1625 Acoustic Glass Break Detector - White
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Bubba's Home Security Wireless Driveway Alarm System
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
HOFUY 2-Pack Cordless Spotlight Battery Operated Picture 2 Pack, Black
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Wireless Motion Sensor Detector Gate Entry Door Bell Welcome Chime Alert Alarms
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Enforcer Seco-Larm SM-4201-LQ Track-Mount Overhead Magnetic Contact Switch
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Wireless PIR Motion Sensor Detector Home Security Doorbell Indoor Alarm 3Packs
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
4 Sets Door Entry Doorbell PIR Motion Sensor Security Alarm Bell for Shop Home
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
NEW Honeywell FG-1625 FlexGuard Glass Break Detector
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Wireless Motion Sensor Alarm Driveway Alert 918ft Long Range Entry Doorbell 5PCS
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Wireless PIR Motion Sensor Detector Home Security Doorbell Chime Alarm Bell 5Set
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.