Sensors & Motion Detectors

sensors & motion detectors — pre-owned

2,575listings

Browse 2,575 sensors & motion detectors — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.

eufy Security Garage Door Sensor Add-On for Garage-Control Cam and Cam Plus
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Certified - RefurbishedBuy It NowBest Offer

eufy Security Garage Door Sensor Add-On for Garage-Control Cam and Cam Plus

Easy to Install: Setting up Garage Door Sensor is simple. Just stick, hold, and release with the 3M sticker. Or just fasten into place with screws. At Anker we take a different approach to the market.

$14.53$34.99-58%

You save $20.46

Free ShippingOntario, US
anker_outlet_storeTOP
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99.6%Excellent· 92.4k
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QOLSYS iQ2+ DSC 433 POWER G WIRELESS SYSTEM ALARM.COM VERIZON LTE QS9201-4208 U
UsedBuy It NowBest Offer

QOLSYS iQ2+ DSC 433 POWER G WIRELESS SYSTEM ALARM.COM VERIZON LTE QS9201-4208 U

QOLSYS ALL IN ONE WIRELESS ALARM SECURITY SYSTEM. Manufacturer :Qolsys. Condition :Preowned in excellent condition.

$179.95
Free ShippingFriendswood, US
bobmish
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99.2%Excellent· 18.5k
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REPAIR SERVICE FOR QOLSYS iQ2 iQ2+ ALARM.COM WIRELESS ALARM PANEL
UsedBuy It NowBest Offer

REPAIR SERVICE FOR QOLSYS iQ2 iQ2+ ALARM.COM WIRELESS ALARM PANEL

Manufacturer :Qolsys. Item # / Sku :REPAIR OF QS9201-5208-840.

$100.00
Free ShippingFriendswood, US
bobmish
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99.2%Excellent· 18.5k
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QOLSYS iQ2+ HONEYWELL 2GIG POWER G WIRELESS SYS ALARM.COM VERIZON LTE QS9201-5 U
UsedBuy It NowBest Offer

QOLSYS iQ2+ HONEYWELL 2GIG POWER G WIRELESS SYS ALARM.COM VERIZON LTE QS9201-5 U

QOLSYS ALL IN ONE WIRELESS ALARM SECURITY SYSTEM. Manufacturer :Qolsys. Condition :Preowned in excellent condition.

$179.95
Free ShippingFriendswood, US
bobmish
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99.2%Excellent· 18.5k
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DSC WS4904P Wireless Motion Sensor (TESTED - WORKING)
UsedBuy It Now

DSC WS4904P Wireless Motion Sensor (TESTED - WORKING)

Tested and working. Please let me know if you have any questions!

$12.98
+$5.45Point Clear, US
jtm_resell
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100.0%Excellent· 10.1k
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eufy Entry Sensor Send Alert Triggers Siren for Doors Windows Detects Indoor-Use
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Certified - RefurbishedBuy It NowBest Offer

eufy Entry Sensor Send Alert Triggers Siren for Doors Windows Detects Indoor-Use

Protect Your Doors and Windows from Break-Ins with eufy Security Entry Sensor. eufy Security: Less Trouble. More Secure. Ever Expandable. Entry Sensor. How to install the entry sensor?. No, it is designed for indoor use only (Not Weatherproof).

$22.07$23.99-8%

You save $1.92

Free ShippingOntario, US
anker_outlet_storeTOP
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99.6%Excellent· 92.4k
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Bio Reader MorphoWave Compact MDPI Model:MPH-AC004B
UsedBuy It NowBest Offer

Bio Reader MorphoWave Compact MDPI Model:MPH-AC004B

$795.00
+$19.99Phoenix, US
allenb602
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100.0%Excellent· 722
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Garmin Ant+ Mini Foot Pod with Shoe Clip Footpod (010-11092-00)
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UsedBuy It Now

Garmin Ant+ Mini Foot Pod with Shoe Clip Footpod (010-11092-00)

The Foot Pod relays the data it captures wirelessly to a computer, sport watch, or smartphone adapter with ANT+ support. To make it as unobtrusive as possible, the Foot Pod can attach to shoelaces or fit in the mid-sole pocket of compatible shoes.

$139.99
Free ShippingWilmington, US
dreambean_softTOP
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99.8%Excellent· 5.0k
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Ring White Smart Lighting Motion Sensor 5SM1S8-WEN0 Lot Of 2
UsedBuy It Now

Ring White Smart Lighting Motion Sensor 5SM1S8-WEN0 Lot Of 2

The Ring White Smart Lighting Motion Sensor 5SM1S8-WEN0 Lot Of 2 is a wireless, Wi-Fi connected motion sensor designed for indoor use. It is compatible with Ring products and Amazon Alexa for smart home integration. Powered by batteries, this sensor features smart lighting technology that activates when motion is detected, providing an added layer of security and convenience for your home. The sleek white design and easy setup make it a practical addition to any indoor space for enhanced surveillance and smart home functionality.

$15.99
+$6.00Phoenix, US
remarkablefinders
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100.0%Excellent· 3.9k
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eufy Home Alarm System Motion Sensor 30ft Detect Adjustable Sensor|Refurb
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Certified - RefurbishedBuy It NowBest Offer

eufy Home Alarm System Motion Sensor 30ft Detect Adjustable Sensor|Refurb

Eufy Security Motion Sensor. Adding the motion sensor to your existing security system is a breeze. Once installed, pair the device via the eufy Security app. To prevent your playful pets from accidentally triggering the motion sensor, you can adjust the sensitivity so that it only triggers when human-sized intruders are detected.

$18.39$19.99-8%

You save $1.60

Free ShippingOntario, US
anker_outlet_storeTOP
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99.6%Excellent· 92.4k
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eufy Entry Sensor Send Alert Triggers Siren for Doors Windows Detects|Refurb
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Certified - RefurbishedBuy It NowBest Offer

eufy Entry Sensor Send Alert Triggers Siren for Doors Windows Detects|Refurb

Protect Your Doors and Windows from Break-Ins with eufy Security Entry Sensor. eufy Security: Less Trouble. More Secure. Ever Expandable. Entry Sensor. How to install the entry sensor?. Step 1: Peel off the mounting tape and stick or screw the sensor onto the door or window you want to monitor.

$22.79$23.99-5%

You save $1.20

Free ShippingOntario, US
anker_outlet_storeTOP
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99.6%Excellent· 92.4k
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Ring Jobsite Security – Starter Kit, 5-piece
UsedBuy It Now

Ring Jobsite Security – Starter Kit, 5-piece

Ring Jobsite Security Starter Kit. Includes Jobsite Security case, motion sensor, battery spotlight, battery camera, ring alarm pro, and Mounting hardware. Doesn't seem to have ever been installed. All items are in the photos. Only see one rechargeable battery.

$105.00
Free ShippingFarmington, US
lostalota5
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100.0%Excellent· 126
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Qolsys IQ Remote PG PowerG Touchscreen Panel QW9104-840 Open Box
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UsedBuy It Now

Qolsys IQ Remote PG PowerG Touchscreen Panel QW9104-840 Open Box

Model: IQ Remote PG (PowerG). PowerG wireless communication. IQ Remote panel. Designed as a secondary panel. Power adapter. Model Number: QW9104-840. Color: White. Box has writing/markings.

$124.95
Free ShippingLake Oswego, US
themarinshopTOP
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99.9%Excellent· 2.9k
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Pasco Scientific Rotary Motion Sensor model no. CI-6538
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UsedBuy It Now

Pasco Scientific Rotary Motion Sensor model no. CI-6538

Sensor designed for use with the PASCO.

$47.00
See listingPonca City, US
quetzalcoatl82TOP
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100.0%Excellent· 1.5k
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McGill MR FP40T Irradiance/Temperature Sensor MCG-MR-FP40T   19/10/21
-40%
UsedBuy It NowBest Offer

McGill MR FP40T Irradiance/Temperature Sensor MCG-MR-FP40T 19/10/21

Up for sale is a McGill MR FP40T Irradiance & Temperature Sensor (Model: MCG-MR-FP40T). • Includes stainless steel housing, mounting flange (see photos) and sensor probe.

$427.80$713.00-40%

You save $285.20

Free ShippingPhoenix, US
everythinforless
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100.0%Excellent· 7.1k
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Flume 2 Smart Home Water Monitor & Leak Detector WiFi Real-Time Usage – Used
UsedBuy It NowBest Offer

Flume 2 Smart Home Water Monitor & Leak Detector WiFi Real-Time Usage – Used

Unit powers on but has not been fully tested, so it is being sold as-is. Leak detection alerts. Power Adapter. Bridge Module.

$119.99
+$6.99Carrollton, US
dailydealscarrollton
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99.0%Excellent· 3.1k
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BRAND NEW Tyco DSC PG9914 M5 PowerG Wireless Pet-Immune Motion Detector 915MHz​
For parts or not workingBuy It Now

BRAND NEW Tyco DSC PG9914 M5 PowerG Wireless Pet-Immune Motion Detector 915MHz​

Tyco DSC PG9914 M5 PowerG Wireless Pet-Immune PIR Motion Detector. "M5 (915-5:012)" might be proprietary to a specific panel or provider.

$59.99
Free ShippingFullerton, US
topdeallab
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99.7%Excellent· 581
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Zeptive ZVD2300 Wireless Vape Detector
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UsedBuy It NowBest Offer

Zeptive ZVD2300 Wireless Vape Detector

Item was recently removed from working service and is in excellent working order. Item will come with a 30 Day Warranty. Cosmetically in good condition showing minor scuffs / scratches / blemishes from previous use. Includes Wireless Vape Detector as pictured. No additional items or accessories are included. Pictures are of one of the actual units available. Inventory is on hand and ready to ship. Please feel free to message us with any questions you may have. .

$300.08
+$5.55Rancho Cordova, US
ntc_techTOP
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99.9%Excellent· 43.3k
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Netgear Arlo Wireless Add-On In/Outdoor Smart Security Light w/ Battery, AL1101
UsedBuy It NowBest Offer

Netgear Arlo Wireless Add-On In/Outdoor Smart Security Light w/ Battery, AL1101

Requires Arlo security light system with Bridge - This is an add-on Arlo security light. Weather resistant: put Arlo lights anywhere - indoors or out. Things You Should Know: An item that has been used previously.

$27.50
Free ShippingCarrollton, US
offer-down
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99.7%Excellent· 2.3k
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 GE Interlogix 60-807-95R Wireless Motion Sensor, Simon XT XTi Concord
UsedBuy It Now

GE Interlogix 60-807-95R Wireless Motion Sensor, Simon XT XTi Concord

GE Interlogix 60-807-95R Wireless Motion Sensor, Simon XT XTi Concord (Refurbished). This unit is battery operated and functions wirelessly. It features a tamper switch and three-minute motion lockout to conserve battery life.

$35.99
Free ShippingLos Angeles, US
saftymind
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99.9%Excellent· 49.2k
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Honeywell Ademco Vista 4219 wired 8-Zone Expander pre-owned without front cover
UsedBuy It Now

Honeywell Ademco Vista 4219 wired 8-Zone Expander pre-owned without front cover

1 x SA4219 wired zone expander.

$27.99
Free ShippingUnion City, US
daynelbian
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100.0%Excellent· 1.4k
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HONEYWELL RESIDEO 5800PIR-RES WIRELESS INFRARED MOTION DETECTORS Lot x 3
UsedBuy It Now

HONEYWELL RESIDEO 5800PIR-RES WIRELESS INFRARED MOTION DETECTORS Lot x 3

CONTENTS: 3 x 5800PIR-RES Infrared Motion Detectors - preowned. Ultraviolet protected lens. 3V lithium battery. 5-year battery life. No need for jumpers or switches or disassembly that complicates installation.

$49.99
Free ShippingUnion City, US
daynelbian
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100.0%Excellent· 1.4k
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Philips Hue Smart Dimmer Switch with Remote - 458141 V1 Works with Amazon Alexa
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UsedBuy It Now

Philips Hue Smart Dimmer Switch with Remote - 458141 V1 Works with Amazon Alexa

This sleek and modern switch features a white color and is designed for both indoor and outdoor use.

$20.00
Free ShippingElizabethport, US
thecloseoutgirlsTOP
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99.6%Excellent· 12.8k
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SimpliSafe Original Generation - ES1000 - Door / Window Entry Sensor
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UsedBuy It NowBest Offer

SimpliSafe Original Generation - ES1000 - Door / Window Entry Sensor

All sensors are in working condition. this is a multi listing, not all sensores are bright white. A handful show discoloring from sun. Pictures taken from several sensors that you may receive. this is just to illustrate what the color could look like. Hope this helps. 1st generation was used between 2000 and 2013. DOES NOT WORK WITH GENERSTION 3.

$5.49
See listingNaperville, US
refinderyapTOP
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100.0%Excellent· 964
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Swann Motion Alert Sensor for Indoor & Outdoor Waterproof Wide Motion Detection
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Excellent - RefurbishedBuy It Now

Swann Motion Alert Sensor for Indoor & Outdoor Waterproof Wide Motion Detection

With a wide 110° motion detection range, it’s perfect for monitoring key areas indoors and outdoors. The sensor is easy to install with adhesive mounts and operates on included AAA batteries. Its weatherproof design ensures durability.

$12.88
Free ShippingSan Jose, US
onlyonedealTOP
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99.4%Excellent· 39.3k
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Ring Alarm Motion Detector (2nd gen) Z-Wave - 5AT2S9 (/RT6-22963-5AT2S9-UA)
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Good - RefurbishedBuy It NowBest Offer

Ring Alarm Motion Detector (2nd gen) Z-Wave - 5AT2S9 (/RT6-22963-5AT2S9-UA)

Ring Alarm Motion Detector (2nd gen) Z-Wave - 5AT2S9. Health & Beauty. Requires the Ring Alarm or Ring Alarm Pro Security Kit. Set your security in motion. Advanced motion sensitivity to prevent false alarms from pets.

$15.99
Free ShippingSkokie, US
4surpluscityTOP
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99.2%Excellent· 153.8k
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Ring Black Smart Lighting Motion Sensor 5SM1S8-BEN0
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UsedBuy It NowBest Offer

Ring Black Smart Lighting Motion Sensor 5SM1S8-BEN0

this item is a Ring Black Smart Lighting Motion Sensor 5SM1S8-BEN0. this item is pre-owned but is in good condition,

$13.99
Free ShippingLas Vegas, US
jwesleyTOP
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100.0%Excellent· 3.0k
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WD71 Water Leak Detector for Wifi Gateway/Hub, 120Db Adjustable Wireless Water S
UsedBuy It NowBest Offer

WD71 Water Leak Detector for Wifi Gateway/Hub, 120Db Adjustable Wireless Water S

WD71 Water Leak Detector for Wifi Gateway/Hub, 120Db Adjustable Wireless Water S. Condition is Used. Shipped with USPS Ground Advantage.

$1.03
See listingHyattsville, US
vill-5327
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99.7%Excellent· 812
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Vernier Software MOTION DETECTOR MD-BTD Lot Of 15
UsedBuy It NowBest Offer

Vernier Software MOTION DETECTOR MD-BTD Lot Of 15

This detector just got removed from the working environment. We have a total of 15 in very nice condition, see picture for more details inventory location R8Dc.

$250.00
See listingUnion City, US
heavenlyvines3
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99.2%Excellent· 116
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ADT Home Security Sensors Motion Detector and Mounts White Set
UsedBuy It Now

ADT Home Security Sensors Motion Detector and Mounts White Set

ADT Home Security Sensors Motion Detector and Mounts White Set

$66.00
+$12.00Morganton, US
broncos-81
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100.0%Excellent· 1
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Resideo Door/Window Sensors + Motion Detectors Lot (2+2) Wireless Security USED
UsedBuy It NowBest Offer

Resideo Door/Window Sensors + Motion Detectors Lot (2+2) Wireless Security USED

2x Motion Detectors. 2x Door/Window Sensors. May require programming with your alarm panel. No mounting hardware, screws, or accessories included. Used – Fully functional, normal signs of use.

$59.00
See listingMiami, US
mpmedso-20
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100.0%Excellent· 285
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Honeywell FG-701 Glassbreak Simulator Flexguard Intellisense Tester Tool TESTED
UsedBuy It NowBest Offer

Honeywell FG-701 Glassbreak Simulator Flexguard Intellisense Tester Tool TESTED

Honeywell FG-701 Glassbreak Simulator Flexguard Intellisense Tester Tool Tested

$75.00
Free ShippingLas Vegas, US
vegaspickz
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99.7%Excellent· 2.5k
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Philips Hue Indoor Motion Sensor for Smart Lights - MODEL 9290012607
UsedBuy It Now

Philips Hue Indoor Motion Sensor for Smart Lights - MODEL 9290012607

If it is not pictured, it is not included. (ie model number, ect.) Unless there are multiple quantities available. You will receive exactly what is pictured, unless there are multiple quantities available.

$39.95
Free ShippingWeaverville, US
aluckyfindonline
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99.9%Excellent· 3.2k
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Lot of (3) Three Oculus 3P-A USB Wired Virtual Reality Motion Tracking Sensor
UsedBuy It NowBest Offer

Lot of (3) Three Oculus 3P-A USB Wired Virtual Reality Motion Tracking Sensor

Pre-owned condition. You are purchasing all 3. What you see is what you get. Thank you.

$29.99
+$9.99Lytle, US
r.o.o.d
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99.9%Excellent· 5.0k
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Ring Wireless Indoor White Alarm Contact Sensor (5 Pack)
UsedBuy It NowBest Offer

Ring Wireless Indoor White Alarm Contact Sensor (5 Pack)

$67.99
Free ShippingGreenville, US
escodistribution
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100.0%Excellent· 294
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Lot of 10 Iris iL06_1 CONTACT SENSOR Indoor Wireless Security System No Magnet
UsedBuy It NowBest Offer

Lot of 10 Iris iL06_1 CONTACT SENSOR Indoor Wireless Security System No Magnet

$29.99
Free ShippingDayton, US
alex_sari
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100.0%Excellent· 22.9k
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Xfinity Zigbee Door Window Sensor Home Assistant - LDHD2AZW - Works Tested
UsedBuy It NowBest Offer

Xfinity Zigbee Door Window Sensor Home Assistant - LDHD2AZW - Works Tested

$12.06
Free ShippingClinton, US
phantomvgcc
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99.7%Excellent· 2.8k
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Ring Alarm Motion Detector - 2nd Gen - White - 5AT2S9
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UsedBuy It Now

Ring Alarm Motion Detector - 2nd Gen - White - 5AT2S9

Adjust your Motion Detection level to help avoid false alarms from the pets. Ring Alarm Motion Detector. Requires the Ring Alarm Base Station.

$13.77
+$3.00Grand Prairie, US
sparepartscentraltxTOP
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99.6%Excellent· 24.3k
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Used incomplete Tattletale  Portable Indoor/Outdoor Alarm System, works
UsedBuy It NowBest Offer

Used incomplete Tattletale Portable Indoor/Outdoor Alarm System, works

Used Incomplete Tattletale Portable Indoor/Outdoor Alarm System good working, Includes only Alarm Machine, Remote Control, Charger, and Instructions/ Documents ( Only the Power On/off Functionality, Alarm Activation and Deactivation, and Sound Were Tested, and it worked Perfectly,MADE IN USA

$285.00
+$48.00Delaware, US
espinsalva
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100.0%Excellent· 482
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X-SENSE WIFI ALARM LISTENER KIT - WHITE
UsedBuy It NowBest Offer

X-SENSE WIFI ALARM LISTENER KIT - WHITE

• Voice Alerts with Location: The SAL100 listener features a locating function with 17 optional locations; when the detector is triggered, the listener will announce its location while sounding an alarm, enabling you to locate the source of the fire faster.

$85.88
Free ShippingImmokalee, US
zoematech
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100.0%Excellent· 168
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