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Beam Photoelectric Infrared Detector Alarm Barrier Sensor Home Security System

$ 4.4 $ 2.64

NEW Heath Zenith Motion Sensor Light Control Combo Pack SL5215WH HS

$ 24.53 $ 14.72

Ajax DoorProtect Plus Magnetic Opening Detector with Tilt & Shock Sensor Protect

$ 48.35 $ 29.01

SimpliSafe Original Generation Motion Sensor - Brand New

$ 17.59 $ 10.55

2014 GE Motion-Sensing Switch with Automatic Shut-Off Feature White NEW FREE S/H

$ 15.83 $ 9.49

Guardian Leak Prevention System with 1 Leak Detector - KGLPS1-1

$ 114.39 $ 68.63

Philips Battery Operated Window & Door Alarm 2 Pack White

$ 13.45 $ 8.07

Anti-RFI Single Safety Beam Sensor Infrared Photocell Gate Door Barrier Detector

$ 10.25 $ 6.15

3PC Sonoff Zigbee Motion Sensor Wireless Detector Security Detect Alarms SNZB-03

$ 22.87 $ 13.72

RING - Wi-Fi MAILBOX SENSOR ONLY (NO BRIDGE)__WHITE__BRAND NEW__SEALED A+++

$ 30.78 $ 18.46

LOT OF 2 Sentrol Wireless Glassbreak Sensors

$ 22 $ 13.2

Microwave motion sensor tc20

$ 220 $ 132

White AC 110V PIR Motion Sensor Light Switch Detector Infrared Wall Occupancy

$ 13.8 $ 8.28

Paradox NV5 - High-Performance Infrared Wired Motion PIR (Works With All Alarms)

$ 20.23 $ 12.13

Tuya Temperature Humidity Sensor Thermometer Hygrometer Wifi/ Zigbee Smart Home

$ 8.28 $ 4.97

ADT Samsung Keychain Remote F-ADT-KEY-1 New - Damaged Housing

$ 14.22 $ 8.53

Tuya Smart WiFi Infrared Detector Motion Sensor Home Security Alexa US NEW Lot

$ 13.2 $ 7.92

(2) New Bunker Hill Security, 36 LED Solar Security Light with Motion Detector

$ 10.56 $ 6.33

Tuya WiFi Smart PIR Motion Sensor Alarm Detector Work With Alexa Google Home LN

$ 12.1 $ 7.26

180°Outdoor Security Infrared PIR Motion Sensor Switch to 50Hz 85 to 265V

$ 5.73 $ 3.44

GUARDLINE GL2000/GL5000 WIRELESS DRIVEWAY ALARM, 4 MOTION DETECTORS + RECEIVER

$ 86.24 $ 51.74

X-10 Powerhouse MC460 with 14 Modules and Platt Padded Storage Case UNTESTED

$ 57.2 $ 34.32

ELEGRP Occupancy Motion Sensor Light Switch PIR Infrared Motion Activated White

$ 13.15 $ 7.89

SONOFF SNZB-03 ZigBee PIR Motion Sensor Smart Home Wireless Detector Alarms

$ 9.67 $ 5.8

GoControl Essential Z-Wave home security suit, white

$ 35.19 $ 21.11

Heath Zenith Motion Sensor Security Light 240 Degree New In Box NIB

$ 12.98 $ 7.79

Lot of 6 Vivint Smart HOME Wireless Motion Sensor Detector VS-PIR200-345

$ 87.95 $ 52.77

HA-434RTL Home Garage Driveway Business Office Motion Alert and Alarm Securi...

$ 32.55 $ 19.53

COLOR CELLS CC784 LIGHTED SCROLLING SIGN WITH KEYPAD AND POWER SUPPLY

$ 92.4 $ 55.44

DIRECTED ELECTRONICS 8601 NO / NC Magnetic Switch for Window Door Sensor DEI NEW

$ 11.88 $ 7.12

Blue By ADT - door and window sensor (ssh1r0-29) B5291

$ 10.56 $ 6.33

Contact Sensor for Ring Alarm White NEW IN SEALED BOX! FREE SHIPPING!

$ 22 $ 13.2

A0004 Kangaroo Water Leak Detector WiFi Home Security System Personal Alarm

$ 17.16 $ 10.29

DC 12V 433MHz 1CH Wireless Remote Control Relay Module Board for Learning Code

$ 6.85 $ 4.11

Gadget Gear Radar Detector 1000 FT Range (NEW)

$ 9.94 $ 5.96

SimpliSafe Original Generation Glassbreak Detector Sensor (GB1000)

$ 0.87 $ 0.52

Kangaroo Motion + Entry Sensor Wireless Home Security System White A0002 ~ NEW

$ 14.07 $ 8.44

Water Leakage Detection Underground Water Pipe Leak Monitor Detector Monitor Kit

$ 11.15 $ 6.69

Water Leak Leakage Detection Detector Sound Alarm Sensor Water Leak Monitor Kit

$ 12.04 $ 7.22

Water Leak Leakage Detection Detector Sound Alarm Sensor Water Leak Monitor Kit

$ 11.43 $ 6.85

Honeywell-Wireless-Motion-5800PIR-RES

$ 25.08 $ 15.04

SimpliSafe ES3 Entry Door Window Sensor Magnetic White Gen 3

$ 9.68 $ 5.8

DC 12V-24V 8M Automatic Infrared PIR Motion Sensor Detector Switch For LED Light

$ 5.72 $ 3.43

Lot Of 2 Honeywell 5800PIR-RES Wireless Motion Sensors Without Mounting Bracket

$ 13.19 $ 7.91

SimpliSafe Door Entry Sensor New in Unopened Box D1

$ 12.32 $ 7.39

Home Security Wireless Outdoor Driveway Alarm Doorbell 2 Motion Sensor Detector

$ 16.71 $ 10.02

RING ALARM Door or Window Contact Sensor 2nd Generation - NEW 2 PACK

$ 33.39 $ 20.03

SimpliSafe - ES3 Entry Sensor - For Door / Window ( 4 Pack )

$ 29.92 $ 17.95

SimpliSafe Original Generation Extra Panic Button (PB1000) - BRAND NEW

$ 14.91 $ 8.94

180° LED Infrared PIR Motion Sensor Detector Outdoor Wall Light Switch 85-265V #

$ 5.84 $ 3.5

GoControl Essential Z-Wave home security suit, white

$ 35.19 $ 21.11

Zigbee Smart Door Sensor Window Security Alarms Alexa Google Wireless motion

$ 11.48 $ 6.89

Aqara Human Presence Sensor FP1 Detector Human body Exists Sensor Aqara Homekit

$ 57.88 $ 34.73

Interlogic TX-E221 Wierless Recessed Door/Window Sensor

$ 19.36 $ 11.61

DC 12V-24V 8M Automatic Infrared PIR Motion Sensor Detector Switch For LED FAST

$ 4.23 $ 2.53

LED Security PIR Infrared Motion Sensor Detector Switch Wall Light Outdoor US

$ 7.03 $ 4.21

( 2 PACK ) NEW RING CONTACT SENSOR WIRELESS SECURITY ALARM SYSTEM WINDOW DOOR

$ 26.39 $ 15.83

WSX PDT BK Black Passive Dual Technology, wall switch sensor

$ 26.4 $ 15.83

SimpliSafe (KP1000) Original Generation Keypad - BRAND NEW - Batteries Included

$ 39.55 $ 23.73

Radio Shack 49-496 Magnetic Reed Switch mip

$ 4.39 $ 2.63

2 Leviton Decora IPS02-1LW Motion Sensor Auto-On Switch, White

$ 17.59 $ 10.55

Lot of 5 Ecolink WST-232 Wireless Door Window Sensor- Honeywell & 2GIG 345MHz

$ 16.94 $ 10.16

DSC WS4904P INDOOR SECURITY MOTION SENSOR

$ 13.19 $ 7.91

SimpliSafe Original 1st Generation Panic Button (PB1000)

$ 8.75 $ 5.25

WattStopper W-2000A Occupancy Ceiling Sensor Lighting & HVAC Control with bypass

$ 39.59 $ 23.75

5x PIR Infrared Motion Sensor Detector Smart Switch 110V Light Lamp Switch Auto

$ 13.15 $ 7.89

Lutron PP-DV-M Manual On Power Pack 120-277 V 16 A , New In Box

$ 23.75 $ 14.25

NEW RING CONTACT SENSOR WIRELESS SECURITY ALARM SYSTEM WINDOW DOOR (2 Pack)

$ 26.4 $ 15.83

2) 2GIG-DW10-345 Thin Door Window Sensor Contact Switches Go! Control

$ 22.88 $ 13.72

PHASING OUT PASSIVE INFRARED DUAL RELAY WALL SWITCH OCCUPANCY SENSOR WHITE light

$ 13.2 $ 7.91

Ring - Alarm Glass Break Sensor - White

$ 33.26 $ 19.95

Reliance Controls Ammeter and Wattmeter THP103 AmWatt Appliance Load Tester/Plug

$ 26.39 $ 15.83

Govee Water Detectors 5 Pack, 100dB Adjustable Audio Alarm Sensor

$ 33.44 $ 20.06

Temperature & Humidity Sensor Tuya Smart Wifi&Bluetooth For Alexa Google Home US

$ 10.54 $ 6.32

Moen Smart Leak Detector, 1 Pack, Model: 920-004 # 3596

$ 30.71 $ 18.42

Ecobee Smart Sensor 2 Pack EB-RSHM2PK-01 Motion/Temperature NEW FACTORY SEALED

$ 57.19 $ 34.31

NEW KANGAROO A0002 MOTION + ENTRY SENSOR DOOR WINDOW HOME SECURITY -FAST SHIP

$ 12.31 $ 7.38

Govee Water Detectors 5 Pack, 100dB Adjustable Audio Alarm Sensor - New

$ 33.44 $ 20.06

Sage by Hughes Doorbell Sensor - White - Model: 206612 - Sealed - Home Security

$ 10.55 $ 6.33

Moen 920-005 Smart Leak Detector

$ 86.19 $ 51.71

Cartell CP4 Vehicle Sensor Kit Exit Wand 5 Wire Exit Vehicle Detector - CP-4

$ 153.95 $ 92.37

Outdoor Wireless Extra Sensor Alert System Alarm Home Driveway Security Patio

$ 23.93 $ 14.36

PowerG Wireless Door/Window Vanishing Magnetic Contact

$ 22 $ 13.2

Napco Gemini Wireless Low-Profile Window Door Transmitter GEM-TRANSLP

$ 24.19 $ 14.51

New Sealed White Sage Single Gang Light Switch 206611 Security & Home By Hughes

$ 6.15 $ 3.69

RISCO Group RK210PR Comet Pir 36' Rokonet

$ 30.79 $ 18.47

INCOMPLETE Ecobee Remote Room Sensor with Stand for Ecobee Smart Thermostat

$ 26.39 $ 15.83

1Pair 100m Dual Beam IR Infrared Detector Module Burglar Alarm for Home Security

$ 34.6 $ 20.76

SimpliSafe ES3 Entry Door / Window Sensor Magnetic White

$ 13.19 $ 7.91

Smart WiFi Water, Temperature & Humidity Sensor - Alarm App Alerts, Plug & Play

$ 31.67 $ 19

Govee H5040 Water Detector 3-pack With RF WiFi Gateway

$ 35.2 $ 21.12

Interlogix 60-362N-10-319.5 Crystal MaxLife Door/Window Sensor.  New in box

$ 21.56 $ 12.93

Guardline 500 Foot Long Range Driveway Wireless Alarm Extra Sensor 915Mhz

$ 22 $ 13.2

Legrand LMRC-221 White DLM Universal Dimming Room Controller 1-Channel 16A NIB!

$ 171.6 $ 102.96

DREYOO Mailbox Alert, 500 ft Long Rang Mailbox Alarm, IP65 Waterproof Mailbox...

$ 28.06 $ 16.83

SEALED Kangaroo Home Security Water Climate Sensor Leak Detector for iOS/Android

$ 12.31 $ 7.38

2-Pack STITCH by Monoprice Wireless Smart Door/Window Sensor No Hub Required

$ 14.07 $ 8.44

Notion Smart Home Monitoring System 2 sensors and 1 bridge Welcome Kit Hippo

$ 19.3 $ 11.58

Tuya Zigbee WiFi Smart Home Temperature Humidity Sensor Office Alarm US

$ 12.89 $ 7.73

QWORK MC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm

$ 8.13 $ 4.87