Home Security

home security โ€” pre-owned

10,661listings

Browse 10,661 home security โ€” pre-owned on eBay โ€” listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.

Google Nest Protect 2nd Gen S3000BWES - Expires 2029-2033 - UNIT ONLY No Bracket
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UsedBuy It Now

Google Nest Protect 2nd Gen S3000BWES - Expires 2029-2033 - UNIT ONLY No Bracket

Google Nest Protect 2nd Generation (S3000BWES). MPN: S3000BWES. 1x Google Nest Protect 2nd Gen Unit (Selected Year). Model: Protect 2nd Gen (Battery Version). No mounting bracket, backplate, or screws included.

$95.99
Free ShippingStafford, US
beargearsTOP
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99.9%Excellentยท 34.6k
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M&S Linear MC902 Intercom Master Ivory Pre Owned but working
UsedBuy It Now

M&S Linear MC902 Intercom Master Ivory Pre Owned but working

The M&S Linear MC902 Intercom Master is a pre-owned audio intercom system in ivory color. Manufactured by Linear, this model offers secure communication within your home or garden. Perfect for improving home security and convenience, this intercom provides a reliable way to communicate with visitors or loved ones while ensuring their safety. Upgrade your home entry system with this functional and efficient Linear intercom master. NOS

$250.00
Free ShippingDraper, US
as-you-like-it
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100.0%Excellentยท 303
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2N Helios IP Force IP69K Intercom 4 Buttons HD Camera 10W Speaker
UsedBuy It NowBest Offer

2N Helios IP Force IP69K Intercom 4 Buttons HD Camera 10W Speaker

The 2N Helios IP Force IP69K Intercom is a high-quality video doorbell designed for outdoor use. With its 4 buttons and HD camera, this intercom provides reliable security for your home. It features remote/cloud configuration, web interface, and mobile app support for easy management. The PoE connectivity and IP69K standards ensure efficient power supply and robust performance in various weather conditions. Made in the Czech Republic, this intercom is a top choice for home improvement and home security in outdoor locations.

$200.00
See listingBillings, US
rams1985
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100.0%Excellentยท 33
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Brinks Home Security Fire Resistant Lock Box w/2 Keys Black 12.75" x 8.25" x 4"
UsedBuy It NowBest Offer

Brinks Home Security Fire Resistant Lock Box w/2 Keys Black 12.75" x 8.25" x 4"

We are not experts but will try to describe the item with all the information that we have.

$18.43
See listingLaotto, US
we-buy-estates
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99.9%Excellentยท 10.0k
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Nest Protect 2nd Gen 06C Smoke & Carbon Monoxide Alarm, Wired, expires 2028
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UsedBuy It Now

Nest Protect 2nd Gen 06C Smoke & Carbon Monoxide Alarm, Wired, expires 2028

๐Ÿ“… Expiration Date: 2028. This is aGoogle Nest Protect (2nd Generation) Smoke & Carbon Monoxide Alarm. The unit has been fully tested and is in 100% working condition. Nest Protect Unit (Main Body).

$49.99$64.95-23%

You save $14.96

Free ShippingStafford, US
beargearsTOP
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99.9%Excellentยท 34.6k
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SimpliSafe 6 Piece Wireless Home Security System - White
-82%
Certified - RefurbishedBuy It Now

SimpliSafe 6 Piece Wireless Home Security System - White

Ready to protect, right out the box. Easy to install on every type of door or window. Deter intruders. We include a Yard Sign free with your system. Batteries, Security Decals, Yard Sign, and 3 ft. Stake.

$49.99$284.99-82%

You save $235.00

Free ShippingCarol Stream, US
simplisafe
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99.1%Excellentยท 932
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Google Nest Protect CO & Smoke Detector Alarm - 2nd Gen - WIRED - NOT EXPIRED
-18%
UsedBuy It Now

Google Nest Protect CO & Smoke Detector Alarm - 2nd Gen - WIRED - NOT EXPIRED

Used Google Nest Smoke and Carbon Monoxide (CO) detector alarm in EXCELLENT CONDITION. Original box, mounting plate, and wire are included. This is the 2nd Generation WIRED version.

$69.95$84.95-18%

You save $15.00

Free ShippingBrooksville, US
shroomsupply
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100.0%Excellentยท 666
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Google Nest Protect CO & Smoke Detector Alarm - 2nd Gen - WIRED - EXPIRES 9/2028
-18%
UsedBuy It Now

Google Nest Protect CO & Smoke Detector Alarm - 2nd Gen - WIRED - EXPIRES 9/2028

Used Google Nest Smoke and Carbon Monoxide (CO) detector alarm in EXCELLENT CONDITION. Original box, mounting plate, and wire are included. This is the 2nd Generation WIRED version.

$69.95$84.95-18%

You save $15.00

Free ShippingBrooksville, US
shroomsupply
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100.0%Excellentยท 666
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Google Nest T5000SF Temperature Sensor for Nest Learning Thermoset Nest E UVG
UsedBuy It Now

Google Nest T5000SF Temperature Sensor for Nest Learning Thermoset Nest E UVG

Works with the Nest Learning Thermostat (3rd gen) and the Nest Thermostat E. Nest Sensor. Requires one CR2 3V lithium battery. Back Cover.

$19.99
Free ShippingVan Nuys, US
proelement
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99.8%Excellentยท 887
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Safemark Commercial Safe Wall Or Floor Safe
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UsedBuy It Now

Safemark Commercial Safe Wall Or Floor Safe

$29.95
+$36.74Carlisle, US
my_weekly_dealsTOP
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99.8%Excellentยท 5.3k
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First Alert Z-WAVE Smoke & Carbon Monoxide Alarm (ZCOMBO) - with New Batteries
UsedBuy It Now

First Alert Z-WAVE Smoke & Carbon Monoxide Alarm (ZCOMBO) - with New Batteries

First Alert Z-WAVE Smoke & Carbon Monoxide Alarm with new batteries and hardware as pictured.

$15.77
Free ShippingEuless, US
laptoppartspro
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99.6%Excellentยท 11.3k
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eufy 5-Piece Home Alarm Security System Kit Keypad Entry/Motion Sensor|Refurbish
-53%
Certified - RefurbishedBuy It NowBest Offer

eufy 5-Piece Home Alarm Security System Kit Keypad Entry/Motion Sensor|Refurbish

Instant Alerts: Get notified as soon as motion or a breach is detected with the eufy Security app. Easy Setup: Install in minutes all by yourself. The entry sensors attach to doors and windows, while the motion sensor and keypad can be secured to walls via the included mounts.

$80.74$169.99-53%

You save $89.25

Free ShippingOntario, US
anker_outlet_store
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99.6%Excellentยท 92.4k
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Google Nest Protect CO & Smoke Detector Alarm - 2nd Gen - WIRED - EXPIRES 7/2028
-18%
UsedBuy It Now

Google Nest Protect CO & Smoke Detector Alarm - 2nd Gen - WIRED - EXPIRES 7/2028

Used Google Nest Smoke and Carbon Monoxide (CO) detector alarm in EXCELLENT CONDITION. Original box, mounting plate, and wire are included. This is the 2nd Generation WIRED version.

$69.95$84.95-18%

You save $15.00

Free ShippingBrooksville, US
shroomsupply
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100.0%Excellentยท 666
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ITI GE Interlogix NetworX NX-148E-RF LCD Keypad Wireless Receiver Tested Working
UsedBuy It Now

ITI GE Interlogix NetworX NX-148E-RF LCD Keypad Wireless Receiver Tested Working

Professionally refurbished keypad removed from working alarm systems. All units have been tested and verified fully functional prior to shipment. You will receive a unit in good cosmetic condition โ€” no yellowing, no cracks, and no visible damage. Clean, presentable, and ready for installation. Free Shipping 60-Day Warranty / Returns Accepted

$149.99
Free ShippingPorter Ranch, US
alexradi87
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100.0%Excellentยท 187
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BONANO 1.6 CUB FIREPROOF SAFE WITH MUTE FUNCTION DIGITAL TOUCH SCREEN Keypad
UsedBuy It NowBest Offer

BONANO 1.6 CUB FIREPROOF SAFE WITH MUTE FUNCTION DIGITAL TOUCH SCREEN Keypad

It features four solid lock bolts and a pry-resistant micro seam design, providing robust physical protection against forced entry. โ€ข ใ€Anti-Tampering Alarm Systemใ€‘: The safe box is equipped with a double alarm system for added security.

$69.37
Free ShippingImmokalee, US
zoematech
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100.0%Excellentยท 168
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Ubiquiti UniFi Access Reader w/ PoE Injector Door Access Control Unit
-5%
UsedBuy It NowBest Offer

Ubiquiti UniFi Access Reader w/ PoE Injector Door Access Control Unit

Ubiquiti UniFi Access Reader w/ PoE Injector Door Access Control Unit - No other accessories included We have 30 day returns money back guarantee . We do our best to describe everything accurately. This item is sold as shown are pulled from working environments and may include components that are untested, incomplete, or non-functional. While we do our best to describe each item accurately, we cannot guarantee the performance or compatibility of every part. See photos for more details. By purchasing, you acknowledge and accept this item is being sold as-is with no guarantees beyond what is stated.

$109.72$115.49-5%

You save $5.77

+$14.95West Palm Beach, US
buybluebox
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99.9%Excellentยท 838
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HONEYWELL ADEMCO SECURITY 5808W3 WIRELESS PHOTOELECTRIC SMOKE/HEAT DETECTOR USED
UsedBuy It Now

HONEYWELL ADEMCO SECURITY 5808W3 WIRELESS PHOTOELECTRIC SMOKE/HEAT DETECTOR USED

1 x 5808W3 Smoke/Heat Detector - used. Built-in wireless transmitter, temporal code 3 sounder. The technician is able to quickly and easily clean the detector chamber without disassembling the detector head.

$33.99
Free ShippingUnion City, US
daynelbian
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100.0%Excellentยท 1.4k
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Xfinity XHK1-UE Security Alarm Keypad White Home Security With Replacement Back
-10%
UsedBuy It Now

Xfinity XHK1-UE Security Alarm Keypad White Home Security With Replacement Back

Xfinity XHK1-UE Security Alarm Keypad White Home Security With Replacement Back This is a used keypad with a new custom 3D printed back replacement. Each one is tested and in working order but has some cosmetic outer wear or black markings. You will receive a different unit than the one pictured but will have similar wear to the ones pictured. May have black marks in a few spots. Message me if you want to see photos of unit before it is sent to confirm condition. Thanks.

$13.73$15.25-10%

You save $1.52

+$2.99Kaysville, US
ecomsalvage
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99.7%Excellentยท 1.4k
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ONE KIDDE FIREX 120V WIRING HARNESS PIGTAIL USED (SET OF 4)
UsedBuy It NowBest Offer

ONE KIDDE FIREX 120V WIRING HARNESS PIGTAIL USED (SET OF 4)

Please view photos carefully prior to purchase. This set includes 4 used Kidde pigtail terminal wires. Fits most kidde firex detectors, but please verify proper fit for yours. If you have any questions please feel free to reach out! Ships within 24 hours!

$9.99
+$5.49Camp Hill, US
allgoodstradingpost
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99.8%Excellentยท 633
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Kidde KN-COPE-IC Combination Smoke / CO Alarm / Detector w/ Base Free Shipping
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UsedBuy It NowBest Offer

Kidde KN-COPE-IC Combination Smoke / CO Alarm / Detector w/ Base Free Shipping

You are buying a Used Kidde KN-COPE-IC Combination Smoke / CO Alarm / Detector w/ Base.

$29.99
Free ShippingRedford, US
tools-plus-more-llcTOP
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99.7%Excellentยท 8.6k
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Google Nest Protect CO Smoke Detector Alarm 2nd Gen WIRED - EXPIRED! PARTS ONLY!
UsedBuy It Now

Google Nest Protect CO Smoke Detector Alarm 2nd Gen WIRED - EXPIRED! PARTS ONLY!

Used Google Nest Smoke and Carbon Monoxide (CO) detector alarm in EXCELLENT CONDITION. Original box, mounting plate, and wire are included. PARTS ONLY! This unit is EXPIRED and the Nest app will not allow you to add it.

$19.95
Free ShippingBrooksville, US
shroomsupply
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100.0%Excellentยท 666
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Ring Solar Security Sign Illuminated & Solar Powered (sign only)
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UsedBuy It Now

Ring Solar Security Sign Illuminated & Solar Powered (sign only)

Ring Solar Security Sign Illuminated & Solar Powered Intruder Deterrent. SIGN ONLY POLE IS NOT INCLUDED.

$24.86
+$10.00Grand Prairie, US
sparepartscentraltxTOP
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99.6%Excellentยท 24.3k
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Google Nest Protect Hardwired Smoke/CO2 Detectors Lot Of 3 (04/27,05/26,06/26)
UsedBuy It NowBest Offer

Google Nest Protect Hardwired Smoke/CO2 Detectors Lot Of 3 (04/27,05/26,06/26)

Google Nest Protect Hardwired Smoke/CO2 Detectors Lot Of 3. Expiration dates are in the photos. two expiring soon, one April of 2027

$100.00
See listingEvansdale, US
2000camaro23
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100.0%Excellentยท 43
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Honeywell ADT DSC WS4933 Carbon Monoxide Detector - preowned
UsedBuy It Now

Honeywell ADT DSC WS4933 Carbon Monoxide Detector - preowned

Made in Canada, this carbon monoxide detector provides peace of mind and protection for you and your family. 1 x WS4933 Carbon Monoxide - used.

$49.99
Free ShippingUnion City, US
daynelbian
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100.0%Excellentยท 1.4k
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Honeywell / Ademco 9708 Glass Sentry Test Unit
UsedBuy It Now

Honeywell / Ademco 9708 Glass Sentry Test Unit

no box - clean unit and works as it should The box was in very poor shape - I threw it out

$49.95
+$8.00Dover, US
securityparts111
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100.0%Excellentยท 4.2k
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First Alert 2-in-1 Smoke & Carbon Monoxide Alarms with  Voice Alerts  - 2 Pack
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UsedBuy It NowBest Offer

First Alert 2-in-1 Smoke & Carbon Monoxide Alarms with Voice Alerts - 2 Pack

$34.99
Free ShippingUS
retailbanditsTOP
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99.9%Excellentยท 27.8k
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Google Nest Protect CO Smoke Detector Alarm - 2nd Gen - WIRED - EXPIRES 07/2028
-18%
UsedBuy It Now

Google Nest Protect CO Smoke Detector Alarm - 2nd Gen - WIRED - EXPIRES 07/2028

Used Google Nest Smoke and Carbon Monoxide (CO) detector alarm in EXCELLENT CONDITION. Original box, mounting plate, and wire are included. This is the 2nd Generation WIRED version.

$69.95$84.95-18%

You save $15.00

Free ShippingBrooksville, US
shroomsupply
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100.0%Excellentยท 666
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Google Nest Protect CO & Smoke Detector Alarm - 2nd Gen - WIRED -  EXPIRES 2028
-18%
UsedBuy It Now

Google Nest Protect CO & Smoke Detector Alarm - 2nd Gen - WIRED - EXPIRES 2028

Used Google Nest Smoke and Carbon Monoxide (CO) detector alarm in EXCELLENT CONDITION. Original box, mounting plate, and wire are included. This is the 2nd Generation WIRED version.

$69.95$84.95-18%

You save $15.00

Free ShippingBrooksville, US
shroomsupply
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100.0%Excellentยท 666
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Control4 C4-VDB-E-BL Video Doorbell PoE Intercom Camera Black
UsedBuy It NowBest Offer

Control4 C4-VDB-E-BL Video Doorbell PoE Intercom Camera Black

Control4 video doorbell Poe black works great

$280.00
See listingSioux Falls, US
raforr39
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100.0%Excellentยท 18
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Video Doorphone Home Intercom Entry Surveillance Door Display By VOS Systems Inc
UsedBuy It NowBest Offer

Video Doorphone Home Intercom Entry Surveillance Door Display By VOS Systems Inc

This video doorphone entry intercom system by VOS Systems Inc is the perfect addition to your home security. With its high-quality audio and video capabilities, you can easily see and communicate with anyone at your doorstep. The system is designed for ease of use and comes with a variety of features that make it a great choice for any home. Whether you're expecting a package or just want to keep an eye on your property, this intercom system has got you covered. Its durable construction and advanced technology ensure that you get the best quality sound and image possible. So why wait? Get your hands on this amazing video doorphone entry intercom system today and enjoy the peace of mind that comes with knowing who's at your door.

$65.99
+$18.00Hillsboro, US
back2basic
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99.8%Excellentยท 691
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Sentry 1150 / Fire Resistant Chest Safe / Portable Safe w/Key๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡บ๐Ÿ‡ธ
UsedBuy It Now

Sentry 1150 / Fire Resistant Chest Safe / Portable Safe w/Key๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡บ๐Ÿ‡ธ

Sentry 1150 / Fire Resistant Chest Safe / Portable w/Key๐Ÿ‡บ๐Ÿ‡ธ๐Ÿ‡บ๐Ÿ‡ธ. Condition is Used. Shipped with USPS Ground Advantage.

$49.99
Free ShippingBrooklyn, US
ovrstkspply
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99.4%Excellentยท 1.0k
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Orange Shasta Can Safe Secret Hidden Storage Container Screw top California
UsedBuy It NowBest Offer

Orange Shasta Can Safe Secret Hidden Storage Container Screw top California

$11.13
+$6.25Sacramento, US
vintage-dee
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99.8%Excellentยท 4.5k
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Used 36090 NuTone 5" Replacement Intercom Speaker Cone 25 ohm ISA IS 335 445
UsedBuy It Now

Used 36090 NuTone 5" Replacement Intercom Speaker Cone 25 ohm ISA IS 335 445

The 5" speaker fits into many NuTone intercoms including This is an indoor speaker.

$25.00
+$3.95Basking Ridge, US
stevesintercomshop
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100.0%Excellentยท 3.2k
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Google Nest Protect CO Smoke Detector Alarm - 2nd Gen - WIRED - EXPIRES JULY '28
-18%
UsedBuy It Now

Google Nest Protect CO Smoke Detector Alarm - 2nd Gen - WIRED - EXPIRES JULY '28

Used Google Nest Smoke and Carbon Monoxide (CO) detector alarm in EXCELLENT CONDITION. Original box, mounting plate, and wire are included. This is the 2nd Generation WIRED version.

$69.95$84.95-18%

You save $15.00

Free ShippingBrooksville, US
shroomsupply
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100.0%Excellentยท 666
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Honeywell 6162RF Alarm System Keypad~Working Pull
UsedBuy It NowBest Offer

Honeywell 6162RF Alarm System Keypad~Working Pull

The Honeywell 6162RF Alarm System Keypad is a white, wireless keypad designed for home security systems. Made by the trusted brand Honeywell, this keypad is compatible with Honeywell systems and features alpha numeric capabilities for easy programming. With a hardwired power source, this keypad does not require batteries and offers convenient wireless connectivity. Perfect for adding a secure touch to any home, this keypad is a reliable and essential component of a comprehensive home security system.

$50.00
+$6.25Stony Point, US
t-villepickers
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99.9%Excellentยท 3.3k
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Antique Wooden Book Set Hidden Safe Stash Box Storage Hidden Key Hole - w/Key
UsedBuy It Now

Antique Wooden Book Set Hidden Safe Stash Box Storage Hidden Key Hole - w/Key

Made of wood with an antique finish, this hinged lid box features a hidden key hole that is revealed by sliding the top out and removing the middle piece that reveals the keyhole. Perfect for storing money, weapons, or valuables.

$29.95
See listingStrasburg, US
mp4relix
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100.0%Excellentยท 716
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Aiphone video doorbell intercom bundle with power supply KC-DAR KC-1HRD
UsedBuy It NowBest Offer

Aiphone video doorbell intercom bundle with power supply KC-DAR KC-1HRD

You get everything Pictured - See All Pictures UNTESTED SOLD AS IS 3 AIPHONE KC-1HRD WITH POWER SUPPLY - KC- DAR CAMERA

$350.00
+$19.00Sandwich, US
bigfin9
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100.0%Excellentยท 1.6k
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Honeywell Silent Knight SD500-ANM P/N 122827 ADDRESSABLE NOTIFICATION MODULE
UsedBuy It Now

Honeywell Silent Knight SD500-ANM P/N 122827 ADDRESSABLE NOTIFICATION MODULE

Item was taken out of a job site that had a bad panel. The actual condition of this device is not known. If it is defective, we will replace it.

$99.99
Free ShippingSpringfield, US
fireandsecurityplus
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100.0%Excellentยท 7.8k
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Airthings 2920 Wave Mini indoor Air quality monitor (Bundle of 2)
UsedBuy It NowBest Offer

Airthings 2920 Wave Mini indoor Air quality monitor (Bundle of 2)

The Airthings 2920 Wave Mini indoor Air quality monitor is a set of two sleek white devices that monitor and improve indoor air quality. Weighing only 0.3 lb, they are lightweight and easy to install in any room.

$29.00
+$7.95Laguna Niguel, US
kabk123
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100.0%Excellentยท 201
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Ge Interlogix Network Nx148e Nx-148e LED Keypad Alarm
UsedBuy It NowBest Offer

Ge Interlogix Network Nx148e Nx-148e LED Keypad Alarm

Tested and working

$89.00
See listingGreer, US
acezstewart1
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100.0%Excellentยท 378
View on eBayOpen listing โ†’