Heath-Zenith (HeathCo) SL-5210 Motion-Sensor Light Control - NEW in Box
$39.99
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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.
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External Antenna PIR Sensor 433MHz EV1527 PIR Motion Sensor Detector for7691
$15.31
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Wireless Radar Motion Detector Sensor – Add-On Accessory Only, No Receiver – 1/2
$186.65
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New 2Gig Thin Door/Window Contact 2GIG-DW10-345
$18.80
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Ring Contact Sensor 2-Pack - White (4XD3S7-0EN0)
$21.00
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Wireless Radar Motion Detector Sensor – Add-On Accessory Only, No Receiver – 1/2
$190.52
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Tuya PIR Motion Sensor Control Works with Home S3T83203
$14.69
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TREEWELL 240° & 360° Replacement Motion Sensor, Adjustable Time & Detection Sens
$27.91
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Lynnoland Industrial Semi Large, Brass (Includes $12 bulb, 2700K, 800LM)
$55.81
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WiFi Water Leak Detector Kit - 2000ft Long-Range, SMS Alerts, 105dB Alarm, 5-Yea
$113.99
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SALE Smart Home Water Leak Detector - Wireless Zigbee Sensor for Real-Time Alerts
$28.49$29.99
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1byone Wireless Driveway Alarm Motion Sensor 1000FT Range 2 Sensors Open Box
$25.97
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SALE SimpliSate Door Entry Sensor ES3 White, Latest Gen 3, New
$17.50$25.00
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SALE WiFi Pool Alarm, Solar Wave Pool Alarm with Optimal Sensitivity, App Control NOB
$63.99$71.10
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Wireless Radar Motion Detector Sensor – Add-On Accessory Only, No Receiver – 1/2
$187.48
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Outdoor Motion Sensor Dog Barking Alarm - 3 Detectors + 1 Receiver, Home Securit
$131.99
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Simplisafe MS3 Motion Sensor and 3 ES3 Entry NEW
$39.99
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SALE Occupancy Motion Sensor Light Switch, PIR Infrared Motion Activated Wall Swit...
$26.57$29.85
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2 Pack Water Leak Detectors 100dB Flood Sensor Alarm Home Basement Bathroom W...
$42.74
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Motion Sensor Battery Powered Outdoor Ring Smart Lights Sidewalk Black works
$46.99
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Motion Sensor Battery Powered Outdoor Ring Smart Lights Sidewalk Black works
$46.99
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SALE Lot Of 6✨Sengled Smart Window & Door Sensor✨2 Packs✨Compatible With Alexa/Google
$73.50$86.47
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Lutron PP-DV dual voltage power pack
$25.00
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SALE Lot of 4 GE Audible Window Door Alarms / Indoor security, Battery Operated - NEW
$13.45$14.95
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QWORK MC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm R
$14.78
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SALE Innovative Water Detection Alarm with Loud 110 dB - Protect Your Basement Now
$25.64$26.99
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Lutron LRF2-VCR2B-P-WH Radio Powr Savr Ceiling Vacancy Sensor White 360° Mount
$70.00
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Solar Driveway Alarm Wireless Outside 1800ft Range, Outdoor Motion Sensor & D...
$54.49
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HUBBELL HMC1DC 12VDC H-MOSS CEILING MOUNT OCCUPANCY SENSOR NIB!
$45.50
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Lot of 4 GE Audible Window Door Alarms / Indoor security, Battery Operated - NEW
$15.00
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105 dB Exit Stopper Door Alarm for Double Doors - Multifunction with On/Off Swit
$165.99
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White Compact Freezer Door Alarm with 60 Sec Delay & 110dB Siren
$42.73
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SALE Lot of 6 GE Audible Window Door Alarms / Indoor security, Battery Operated - NEW
$17.05$18.95
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SALE SimpliSafe Original Generation Door/Window Entry Sensor (ES1000) - NEW
$12.60$21.00
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Wireless Door Alarm Remote Control for Home Security with 105 Decibel Sound
$23.99
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2gig PIR1 Passive Infrared Motion Detector
$23.11
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E-931-S35RRQ Photoelectric Indoor/Outdoor Mounted Beam Seco-Larm S Enforcer Wall
$39.99
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SALE Hanna Products Mail Chime, Wireless Mailbox Alert - Model 1200
$39.95$42.75
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Leviton OPP20-D1 Occupancy Sensor Power Pack (lot of 3)
$75.00
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Driveway Alarm, Home Security Alert System with 36 Melodies, Plug-In Receiver a
$36.67
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NIB Optex RCTD-10U Wireless 1000 TD-10U Sensor + RC-10U Receiver Set **2 Units**
$149.95
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Speed Padel Racket Paddle (221065)
$460.72
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Moose Products MPI-38 Self Contained Siren Security Speaker Alarm
$39.99
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1/2 Mile Solar Wireless Driveway Alarm System Motion Sensor 120dB Security IP65✔
$56.53
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10 piece ADT Smart Home Security- Base S40LR1-01 New In Open Box Never Used
$59.99
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600FT Wireless Motion Sensor Driveway Alarm System Security Alert
$34.19
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SIMPLISAFE LOT NEW ENTRY SENSORS, KEYPAD, SIREN, KEYCHAIN, GLASS
$50.00
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SALE 2 Ademco 4278EX-SN Multiplex Motion Sensor
$42.00$60.00
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