Sensors & Motion Detectors
sensors & motion detectors — pre-owned
Browse 2,549 sensors & motion detectors — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.
eufy Entry Sensor Send Alert Triggers Siren for Doors Windows Detects|Refurb
QOLSYS iQ2+ DSC 433 POWER G WIRELESS SYSTEM ALARM.COM VERIZON LTE QS9201-4208 U
REPAIR SERVICE FOR QOLSYS iQ2 iQ2+ ALARM.COM WIRELESS ALARM PANEL
QOLSYS iQ2+ HONEYWELL 2GIG POWER G WIRELESS SYS ALARM.COM VERIZON LTE QS9201-5 U
Aqara FP2 Presence Sensor mmWave Smart Home Sensor Apple HomeKit – Tested Works
Ring Alarm Smoke & Co Listener (/RT6-22975-9863B-BHASL001-UA)
eufy Security Garage Door Sensor Add-On for Garage-Control Cam and Cam Plus
eufy Security Water and Freeze Sensor w/ Remote Alerts IP65 App Control|Refurb
GE Interlogix 60-807-95R Wireless Motion Sensor, Simon XT XTi Concord
Honeywell SiXCTA Wireless Door/Window Contact Sensor Used
Ring Alarm Motion Detector - 2nd Gen - White - 5AT2S9
IKEA VINDSTYRKA Smart Air Quality Sensor 304.982.39 Home Monitor
SIMPLEX 4903-9426 HORN STROBE SIGNALING DEVICE
NAPCO GEMINI GEM-RP1CAE2 KEYPAD TOUCHPAD ENGLISH ALPHA LCD #2
QOLSYS QR0041-840 3.7V 3200mAh BACK UP BLUE BATTERY iQ2 QS9201 QS9202 PANEL U
Ring Alarm 5-Piece Wireless Home Security Alarm System Kit - White
Netgear Arlo Wireless Add-On In/Outdoor Smart Security Light w/ Battery, AL1101
SimpliSafe Water Sensor Flood Leak Detector Alarm #69
Philips Hue Secure contact sensor NAM Black 1P -no box- FREE S/H
Wyze Home Security Hub With Keypad
Philips Hue Smart Dimmer Switch with Remote - 458141 V1 Works with Amazon Alexa
Vivint V-DW11-345 Wireless Window Sensor Indoor Only White Security Equipment
( x4) Ring Alarm Contact Sensor (2nd Gen) Wireless Sensor No Batteries
Zooz 4-in-1 Sensor ZSE40 Motion Temp Humidity Light Detector
Flume 2 Smart Home Water Usage Monitor and Leak Detection System
Wyze Motion Sensor v2 Model
Ring Black Smart Lighting Motion Sensor 5SM1S8-BEN0
Sengled Smart Window & Door Sensors Alexa Google SmartThings Echo
McGill MR FP40T Irradiance/Temperature Sensor MCG-MR-FP40T 19/10/21
Pasco Scientific Rotary Motion Sensor model no. CI-6538
NAPCO PRO-410 PROGRAMMER PROGRAM TESTER VINTAGE PRO-410M
Ring Jobsite Security – Starter Kit, 5-piece
Ring Alarm Motion Detector (2nd gen) Z-Wave - 5AT2S9 (/RT6-22963-5AT2S9-UA)
Safe House Invisible Pulsed Beam Infrared Photorelay ︱ Alarm 49-307︱ Radio Shack
Bosch DS160 Request to Exit PIR Sensor White Tested & Working
SHARP 433 MHZ WIRELESS SENSOR OQH-CHUNGS-05-006
DMP 9060 Wireless Keypad + 1100X RF Receiver + 1102 Door Transmitters x5 Lot of7
Ring Alarm Smoke & Co Listener (/RT6-22974-9863B-BHASL001-UG)
Sensaphone 1400 “No Cabinet” Remote Monitoring System Monitoring Up To 4 Inputs
Optex RCTD-10U Wireless 1000 TD-10U Sensor + RC-10U Receiver Set