SALE Smart WiFi Door Sensor - Wireless Alerts, Compatible with Alexa/Google - 4-Pack
$66.38$78.09
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Sensors & Motion Detectors deals
Discounted security listings from eBay sellers, biggest markdowns first. Prices and availability change fast — confirm on eBay before buying.
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SALE 
SALE Lot of 4x LongJohn JL-404C Pencil Photocells (120-277V) Photo Cell Sensor Switch
$33.15$39.00
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SALE ZigBee Water Sensor Monitor via phone APP Water Flood Leak Detector New
$17.99$21.16
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SALE GoveeLife Human Presence Sensor, 2.4 GHz Smart mmWave Radar & PIR | H5127
$21.24$24.99
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SALE Smart Door Window Sensors with Long-Lasting Battery - Alexa & Google Compatible
$75.54$88.87
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SALE Z-Wave PIR Motion Detector Pet Immune, White PIRZWAVE2.5-ECO
$62.31$73.31
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SALE DSC WS4904 Wireless PIR Indoor Motion Detector Sensor, White
$24.22$28.50
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SALE 6pk Water Leak Detectors - 12V Battery, 95dB Alert
$86.87$102.20
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SALE Durable White Magnetic Switch - 3 Sets NO/NC Door Recessed Contact Reed Sensors
$20.39$23.99
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SALE BOSCH ISC-BPR2-WP12 Blue Line Gen 2 PetFriendly PIR Motion Detector 40ft New E55
$42.49$49.99
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SALE 5-Pack Magnetic Switch Contacts for Enhanced Home Security - Easy Install
$20.39$23.99
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SALE 2pcs NC Recessed Wired Security Contact Sensor Alarm RC-33 Magnetic Door Switch
$13.76$16.19
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SALE 2pcs NC Recessed Wired Security Contact Sensor Alarm RC-33 Magnetic Reed Switch
$13.76$16.19
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SALE 10pcs/1Bag New For Panasonic PM-F65 photoelectric switch Fast Shipping
$82.45$97.00
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SALE 1PC Panasonic EX-F72 Leak Detection Sensor New Free Shipping
$147.39$173.40
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SALE OC-55 NO+NC Alarm Security Contact Magnetic Reed Switch for Rolling Gate Garage
$17.91$21.07
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SALE 220V PIR Body Infrared Motion Sensor Automatic Switch Infrared Intelligent NW A3
$6.73$7.88
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SALE SECO-LARM Enforcer E-931-S45RRQ Retro-Reflective Beam-Wired-No Reflector
$33.99$39.99
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SALE WATTSTOPPER CU-250-W ULTRASONIC VACANCY WALL SWITCH SENSOR, 600W, 120V, WHITE
$50.96$59.95
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SALE First Alert Instantly Alarm w/ 4 units for Windows or Doors, (NEW, In Packaging)
$15.30$18.00
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SALE 1PC Panasonic EX-F72 Leak Detection Sensor New Free Shipping
$147.14$173.10
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SALE NEW SmartThings Motion Sensor White IM6001-MTP Zigbee Temperature Magnetic
$33.96$39.95
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SALE Wireless Driveway Alarm - 1/2 Mile Range Motion Sensor & Detector, Weather Resis
$65.44$76.99
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SALE Solar Security Siren 6 Pack Motion Activated Alarm 129dB Waterproof
$132.20$155.53
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SALE Portable Outdoor Perimeter Alarm System- 1/4 Mile Waterproof Wireless Motion Sen
$229.47$269.96
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SALE Solar Wireless Driveway Alarm 1/2 Mile Range Outdoor Motion Detectors
$113.31$133.31
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SALE Homsecur Pir Motion Sensor Wireless Passive Motion Detector Alarm 433MHz White
$19.20$22.59
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SALE 5pcs NC Recessed Wired Security Contact Sensor Alarm RC-35 Magnetic Door Switch
$18.06$21.25
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SALE 10pcs HC-34A NC Recessed Wired Gate Contact Sensor Alarm Magnetic Reed Switch
$19.71$23.19
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SALE 2pcs MC-38 Surface Mount Wired NC Door Sensor Alarm Magnetic Reed Switch White
$14.38$16.92
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SALE ADEMCO 9500SN Multiplex Glassbreak Detector
$22.94$26.99
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SALE Car Start Voice Custom 4-channel Trigger Speaker Buzzer Alarm Horn Beep Truck
$30.92$36.38
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SALE MC-58 NC+NO Alarm Security Rolling Gate Garage Door Contact Magnetic Reed Switch
$18.28$21.51
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SALE Ceiling Mount, Wall Mount Sensor, Occupancy, Photocell, Hard Wired, White, 2,600
$222.08$261.99
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SALE Resideo FG-1625 FG-1625T FlexGuard Glass Break Detector Wired New E52
$33.55$39.47
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SALE Orbit B-hyve Smart Flood Sensor 5 Pack IMMEDIATE FLOOD Detection
$42.50$50.00
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SALE Occupancy Motion Sensor Light Switch, 2 Count Matte White - Grounded & Listed
$47.59$55.99
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SALE 3pcs Wired Door Contact Sensor NO NC Surface Mount Magnetic Reed Switch Black
$22.58$26.57
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SALE Automatic Water Leak Detector with Sensors and Shut-off Valve
$78.68$92.56
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SALE Solar Driveway Alarm 8 Pack 129dB Loud Siren Red Flash Strobe Motion Detector
$164.31$193.31
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SALE HOMSECUR 3pcs Pet-Immune PIR Detector For 433MHz Home Burglar Alarm System
$49.12$57.79
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SALE Water Leak Starter Kit: Hub + 4 Leak Sensor 1 Silent, LoRa Long-Range, App/SM...
$103.87$122.20
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SALE Philips LCN3110/05 Occ Sensor IA CM IP65 WH New E50
$41.40$48.70
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SALE RC-35 NC Recessed Wired Gate Contact Sensor Alarm Magnetic Reed Switch
$15.06$17.72
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SALE Reliance Home Warning System THP201 Home Monitoring Phone Alert Call Back Up
$43.99$51.75
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SALE 4pcs RC33 NO Recessed Wire Door Contact Sensor Alarm Magnetic Reed Switch White
$17.54$20.63
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SALE 4pcs RC-33 NO Recessed Wired Security Contact Sensor Alarm Magnetic Reed Switch
$20.65$24.30
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SALE MC-59 NC Alarm Rolling Gate Garage Door Contact Magnetic Reed Switch
$17.94$21.11
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