Alarm Systems
alarm systems — pre-owned
Browse 860 alarm systems — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.
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.
You save $85.00
Ubiquiti Networks UniFi Network Video Recorder (UNVR) No HDD w873
The UNVR unifies enterprise-class da ta protection and scalable storage with simple plug and play integration using the intuitive UniFi Protect software. The drive bays are easily accessed from the front panel, so hard drive mounting and maintenance are simple.
You save $189.00
HUGE LOT Fortress Home Security 02-A Wireless Security Alarm System Parts
This is a huge lot as you can see. One of them does not appear to have even been used. NO BATTERIES WILL BE INCLUDED with any component (TMK).
Honeywell L5100 Touchscreen Alarm Keypad Control Panel, White
Honeywell L5100 Touchscreen Alarm Keypad Control Panel, White
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.
You save $235.00
QOLSYS iQ4 iQP4001 IQ Panel 4 ALARM PowerG LTE GE S-Line 319.5 MHZ Verizon LTE
Compatible with all Qolsys 319.5MHz sensors. - FULL FEATURED IQ4 PANEL WITH POWERG & 319.5 RADIOS. Compatible with all PowerG 915mhz sensors. The new QuadSound speaker system allows Music Streaming over Bluetooth, and SmartMount installation system provides easy wall or table stand mounting options, including the new IQ Base Table Stand Subwoofer.
Honeywell 5800C2W Hardwired to 5800 Wireless Converter
The Honeywell 5800C2W Hardwired to 5800 Wireless Converter is a reliable and efficient device that allows for easy integration of wired and wireless alarm systems. Made by the trusted brand Honeywell and designed for seamless connectivity, this model ensures a secure and seamless connection for your home security needs. Manufactured in Mexico, this converter offers compatibility and versatility for enhancing your home safety system efficiently. In working condition when removed.
Vivint Smart Hub Pro Gen 2 Security Panel Black - New
Functional testing not applicable (sealed). Model Vivint Smart Hub Pro (Gen 2). Service Plan Requires an active Vivint monitoring/service plan to use. Hub Type Security Panel. Cell Phones & Accessories.
Ring Alarm Home Security Kit 8-Piece Alexa Indoor Z Wave Plus
Please see condition of box in pictures. Item has been sealed. Box will be wrapped in bubble wrap & shipped in brown paper.
IQ Panel 4 Black Excellent Condition IMEI Released Ready To Activate
Black, Tested, excellent condition. Removed from a newly ADT setup system, comes with power transformer. IMEI is released and ready to reactivate.
Lot of 4 GE Interlogix Wireless Door Window Sensors 319.5MHz Simon Concord Caddx
Caddx: NX-4, NX-6, NX-8. GE Simon: XT, XTi, Version 2 & 3. You will need your own magnets and CR2032 batteries for installation. Frequency: 319.5 MHz.
GE INTERLOGIX SIMON XT SECURITY SYSTEM
Included sensors: carbon monoxide, smoke/heat, motion, flood, door/window x4. I also saved the batteries and included those. The heat/smoke and carbon monoxide detectors only have a few years of life left before those two will need replaced.
Qolsys IQPanel 2 QS9201-1208-840 Touch Screen wireless security panel
The protective film is still on the screen and shows only slight wear.
Qolsys IQ Panel 2 Home Alarm System Wi-Fi Touchscreen & Motion Sensor
White touchscreen control tablet for home security. Includes touch-to-arm features and encrypted sensors for reliable monitoring. Compact white display complements most home systems. Easy-to-use interface designed for everyday use.
ADT LifeShield S30 Home Security System Kit Sensors Keypad Keyfob
ADT LifeShield S30 base station. - Keyfob remote. System was obtained from storage and has not been tested with active ADT service. - Wireless keypad. - Door/window sensors. - Mounting hardware and accessories.
NON-WORKING Qolsys IQ Panel 4 IQP4001 Touchscreen Wireless Smart Security Alarm
Qolsys IQ Panel 4 IQP4001 Touchscreen Wireless Smart Security Alarm System White. Part Number: IQP4001. Model: IQ Panel 4. Wireless door, window, or motion sensors. PowerG and 319.5 MHz sensor support.
SimpliSafe Home Alarm System Bundle Black w/ 2 Cameras, Keypads, Siren, Sensor
SimpliSafe Home Alarm System Bundle Black w/ 2 Cameras, Keypads, Siren, Sensor
Gently Used Ring Chime (2nd Generation) – Ring Camera Doorbell Accessory
Nothing wrong with it, just upgraded to a newer version. Simple set up (scan QR code on back with phone to setup!).
Ring Z-Wave Plus Home Alarm System Kit Base Station Keypad Sensor Cameras Chime
You will receive the item(s) pictured.
Vista 32FB
Vista 32FB, used but in proper functioning condition. Not locked out.
X10 SUPERVISED SECURITY SYSTEM VOICE DIALER CONSOLE MODEL SC1200 SC12A IN BOX
The box is marked Model SC1200, but the actual console is marked on the bottom Model No.
Segal Solid Bronze Double Cylinder Deadbolt – Max Security VINTAGE QTY TWO WKEYS
2 SEGAL LOCKS WITH KEYS.
Qolsys QS7133-840 16-F Hardwired to Wireless Translator iQ2- iQ4-NEW OPEN BOX
Once we confirm and agree to your request, you may then place your order.Donot leave new requests in the order notes after purchasing. We stand behind our products. Do not place an order and then request a cancellation afterward.
Honeywell Ademco Vista SA4208U Wired 8 Zone Expander Module without top cover
With the top cover removed, users can easily install and connect the module to their existing system for enhanced security features. 1 x SA4208U Wired Zone Expander - without top cover.
You save $2.66
Brinks Home Security Control Panel Untested But Selling As Working Correctly!
Brinks Home Security Keypad. There is some paint on the back edge from pulling it off the wall. Can't test it obviously, but will sell it guaranteed to work.
Ring Alarm Wireless Indoor Security System Kit w/ Keypad, Sensors, glass, motion
Ring Alarm Wireless Indoor Security System Kit w/ Keypad, Sensors, glass, motion
Ring Home Security System - Base Station, Keypad, Window Sensors, Motion Alarm
This is a Generation 1 Ring Home Security System. It includes base station, keypad, motion sensor, range extender, and 4 window/ door opening monitors. Please message with any questions or offers!
Honeywell Lynx Touch L5200 Touchscreen Alarm Control Panel White LynxTouch2
The Honeywell Lynx Touch L5200 Touchscreen Alarm Control Panel is a sleek and modern home security system that includes a touchscreen interface for easy operation. This alarm control panel, designed by the trusted brand Honeywell, is in a stylish white color and comes with all necessary alarm components included. The Mexico-made model, Lynx Touch L5200, offers advanced features and advanced security measures for your home.
You save $2.00
SimpliSafe/Ring Alarm Security Components Wireless Motion Entry Sensors Camera
Type: Door Alarm. Connectivity: Wireless.
You save $6.82
GE Interlogix 60804 Concord Security System Keypad Alphanumeric LCD Touchpad Lot
- GE Interlogix Concord Security System Keypad 60804 Alphanumeric LCD Touchpad - ADT Safewatch Plus Security System Keypad - DSC (Digital Security Controls) LCD Keypad -Lot of 3 - cables/accessories not included - Please see the photos for details on the item's condition and specifications. 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.
2GIG CP21-345 Go!Control Wireless Security Automation System Panel Firmware
Especially if it arrives broken, defective, or not to your liking in any way.
Meyer Electronic Burglar Compact Alarm System For Residential & Commercial VTG
90-second alarm cycle with automatic shut-off and reset. Magnetic Switch Sensor Pairs.
Vintage Nutone Wireless Security Alarm System S-2255 Scovill 1976 Untested!
The Vintage Nutone Wireless Security Alarm System S-2255 Scovill from 1976 is a collectible piece that may hold some value for antique enthusiasts or those interested in retro technology. This untested alarm system includes a battery and is designed for indoor use. The wireless connectivity feature adds a level of convenience and flexibility to the system, making it potentially useful for those looking to add a unique touch to their home security setup.
Concord 4 GE Panel Board 59-851-95R-AR GE Interlogix Panel Tested On 2-21-26
Concord 4 Series Panel System Board 59-851-95R-AR GE Interlogix Factory restored and tested . Installer code 4321, master code 1234, no dealer code programmed. Complete factory default Ready for install. Concord 4 panel only You will get panel in picture Keypad and battery NOT INCLUDED Tested on and updated on 2-21-26 Multiple panels and parts available on our page OnTheHunt365 Fast shipping
QOLSYS iQ4 Back mounting plate FOR IQP4001, IQP4003, IQP4088 White
Iq4 back plate only. used in good condition.
Napco Gem-smk
For sale are Napco Gem-smk photoelectric smoke detectors. Pulled from a working system, no batteries. Comes with base plate.
Honeywell Ademco Vista SA4229 Wired 8 Zone Expander Module with top cover
With the top cover removed, users can easily install and connect the module to their existing system for enhanced security features. 1 x SA4229 Wired Zone Expander - with top cover.
Brinks Home Security Control Panel Untested But Selling As Working Correctly!
Brinks Home Security Keypad. There is some paint on the back edge from pulling it off the wall. Can't test it obviously, but will sell it guaranteed to work.
SimpliSafe Home Security System Bundle
Everything was tested and working before being removed from our home. We recently switched security systems, so this bundle is no longer needed. Includes: * SimpliSafe Base Station * Wireless Keypad * 3 Entry Sensors (doors/windows) * Motion Sensor * Water/Leak Sensor * Key Fob Remote * Panic Button * Power Adapter * Sensor battery removal tool Batteries are installed in the sensors and keypad. All items are in good working condition with normal cosmetic wear from everyday use (please see photos). Perfect for someone starting a SimpliSafe system or adding additional sensors to an existing setup. Please review all photos carefully and feel free to message me with any questions!
GE INTERLOGIX CADDX NX-148E LCD KEYPAD
The GE Interlogix CADDX NX-148E LCD Keypad is a high-quality keypad designed for use in alarm systems and home security systems. With a sleek LCD display and intuitive interface, this keypad allows users to easily control and monitor their home security system. The NX-148 model offers reliable performance and is a trusted choice for those looking to enhance their home's safety and security. Fully functional but has yellowing as shown in photos