UOFUS Glass Ceiling Light Fixture Vintage Small Semi Flush Mount Bronze
$69.82
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Sensors & Motion Detectors
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.
Ring Contact Sensor 2-Pack - White (4XD3S7-0EN0)
$21.00
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
TREEWELL 240° & 360° Replacement Motion Sensor, Adjustable Time & Detection Sens
$27.91
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Ademco 998 PI PIR Motion Detector Pet Immune 40 lbs
$19.99
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
SALE Repelente ultrasónic solar de animales con luz y voz para perros ardillas mapach
$30.99$55.99
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Wireless Radar Motion Detector Sensor – Add-On Accessory Only, No Receiver – 1/2
$190.52
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
SALE Lot of 6 GE Audible Window Door Alarms / Indoor security, Battery Operated - NEW
$17.05$18.95
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Tuya PIR Motion Sensor Control Works with Home S3T83203
$14.69
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Ademco 998 PI PIR Motion Detector Pet Immune 40 lbs
$19.99
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
SAM Wireless DIY Expansion Kit PIR Motion & Door/Window Sensors Indoor White
$10.00
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
SALE SimpliSate Door Entry Sensor ES3 White, Latest Gen 3, New
$17.50$25.00
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Wireless Radar Motion Detector Sensor – Add-On Accessory Only, No Receiver – 1/2
$187.48
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Outdoor Motion Sensor Dog Barking Alarm - 3 Detectors + 1 Receiver, Home Securit
$131.99
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Ademco 998 PI PIR Motion Detector Pet Immune 40 lbs
$19.99
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
2 Pack Water Leak Detectors 100dB Flood Sensor Alarm Home Basement Bathroom W...
$42.74
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Eaton VS306U-W 600W Occupancy/Vacancy Sensor – White
$17.99
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Simplisafe MS3 Motion Sensor and 3 ES3 Entry NEW
$39.99
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
WiFi Water Leak Detector Kit - 2000ft Long-Range, SMS Alerts, 105dB Alarm, 5-Yea
$113.99
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
SALE Lot of 4 GE Audible Window Door Alarms / Indoor security, Battery Operated - NEW
$13.45$14.95
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
SALE WiFi Pool Alarm, Solar Wave Pool Alarm with Optimal Sensitivity, App Control NOB
$63.99$71.10
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Lutron LRF2-VCR2B-P-WH Radio Powr Savr Ceiling Vacancy Sensor White 360° Mount
$70.00
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
White Compact Freezer Door Alarm with 60 Sec Delay & 110dB Siren
$42.73
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
SALE Single Pole Occupancy Motion Sensor Light Switch, PIR Infrared Motion Activat...
$43.48$48.85
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
SALE Innovative Water Detection Alarm with Loud 110 dB - Protect Your Basement Now
$25.64$26.99
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Motion Sensor Battery Powered Outdoor Ring Smart Lights Sidewalk Black works
$46.99
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Solar Driveway Alarm Wireless Outside 1800ft Range, Outdoor Motion Sensor & D...
$54.49
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Motion Sensor Battery Powered Outdoor Ring Smart Lights Sidewalk Black works
$46.99
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
QWORK MC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm R
$14.78
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
1/2 Mile Solar Wireless Driveway Alarm System Motion Sensor 120dB Security IP65✔
$56.53
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
PHILIPS LRM2340 OCCUPANCY SENSOR, FIXTURE MOUNT, HIGH BAY 360° PIR, 120V
$79.99
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
HUBBELL HMC1DC 12VDC H-MOSS CEILING MOUNT OCCUPANCY SENSOR NIB!
$45.50
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
SALE Hanna Products Mail Chime, Wireless Mailbox Alert - Model 1200
$39.95$42.75
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Lutron PP-DV dual voltage power pack
$25.00
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Wireless Door Alarm Remote Control for Home Security with 105 Decibel Sound
$23.99
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Lot of 4 GE Audible Window Door Alarms / Indoor security, Battery Operated - NEW
$15.00
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Driveway Alarm, Home Security Alert System with 36 Melodies, Plug-In Receiver a
$36.67
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
NIB Optex RCTD-10U Wireless 1000 TD-10U Sensor + RC-10U Receiver Set **2 Units**
$149.95
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Handrail Bracket Stainless Steel Brackets Wall Support Easy Installation
$18.93
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
10 piece ADT Smart Home Security- Base S40LR1-01 New In Open Box Never Used
$59.99
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
600FT Wireless Motion Sensor Driveway Alarm System Security Alert
$34.19
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
VL53L0X Time-of-Flight Flight Distance Measurement Sensor Breakout VL53L0X To...
$21.69
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
SALE 2 Ademco 4278EX-SN Multiplex Motion Sensor
$42.00$60.00
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Moose Products MPI-38 Self Contained Siren Security Speaker Alarm
$39.99
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
SALE Bosch - 40' Range Blue Line GEN2 PIR Motion Detector - ISC-BPR2-W12
$20.00$26.50
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Leviton OPP20-D1 Occupancy Sensor Power Pack (lot of 3)
$75.00
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
Honeywell 998PK Six 998 Fresnel PIR Motion Sensors Alarm Security NOS
$33.99
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
E-931-S35RRQ Photoelectric Indoor/Outdoor Mounted Beam Seco-Larm S Enforcer Wall
$39.99
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.
External Antenna PIR Sensor 433MHz EV1527 PIR Motion Sensor Detector for7691
$15.31
View on eBay
Affiliate link — we may earn a commission, at no extra cost to you. Read our affiliate disclosure.