Smart Doorbells & Locks
smart doorbells & locks — pre-owned
Browse 2,464 smart doorbells & locks — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.

eufy E340 Security Video Doorbell 2K HD Dual Cameras with Delivery Guard |Refurb
Find and enable the “eufy Security” skill. Enter your eufy account login details on the Link Account page. Does Video Doorbell E340 support 5 GHz Wi-Fi?. How do I link Alexa and Video Doorbell E340?.
You save $59.75

Schlage Control Mobile Enabed Smart Lock FE410 Greewich 619 626
Up for sale are19x Schalge FE410 Greenwich in 2 different in/out finishes and 2 different outside handles. 619 - Satin Nickel. No deep scratches or broken parts. Hardware is complete, including strike plates.

eufy FamiLock S3 Max Smart Lock Keyless Entry Door Lock Palm Vein Recognition
What kind of doors are eufy FamiLock S3 Max compatible with?. Compatible with most standard doors, door thickness:35-55 mm. Palm Vein Unlocking: Advanced Security with 99.9% Accuracy. Achieve recognition in just 0.6 seconds with cutting-edge, forgery-proof palm vein recognition.
You save $121.99

Alarm.com VDB750 Video Doorbell - White (ADC-VDB750)
The Alarm.com VDB750 Video Doorbell in White is a sleek and modern rectangular-shaped device made of durable plastic. It features a 160-degree view, making it suitable for both home and shop use. With built-in microphone, speakers, and motion activation, this video doorbell offers advanced features for security and convenience. Compatible with Amazon Alexa, it allows for easy integration into your smart home system. The Alarm.com VDB750 also offers audio and video recording capabilities, providing added peace of mind for your front door.

eufy Security Add-on Video Doorbell Dual Camera 2K Dual Motion Detection,Refurb
Greet Guests From Anywhere. See Detailed 2K HD. Know with certainty who's at your door with 2K HD. With accurate Dual Motion Detection, false alarms are reduced by 95%. Get Accurate Alerts with Dual Detection.
You save $143.00

2x Genuine Rechargeable Battery V4 Ring Video DoorBell 2, 3 4 Quick Release Nice
For Ring Video Doorbell 2. for Ring Video Doorbell 3. for Ring Video Doorbell 3 Plus. for Ring Video Doorbell 4. ◆Mondel No.: V4. ◆Compatible With Battery Model: V4, 5AT3S3, 5F53E9. for Ring Stick Up Cam (all generations).

eufy Security Smart Lock C30 Keyless Entry Door Lock Deadbolt Auto-Lock |Refurb
It's not compatible with these services yet. Smart Lock: Easily open your door using a physical key, voice commands with Alexa/Google Assistant or a physical button. The 15-minute DIY installation requires no drilling.
You save $34.00

eufy Smart Lock C33 Wi-Fi Fingerprint Keyless Entry Door Lock with Handle|Refurb
It's not compatible with these services yet. The lock remains operational throughout the year, ensuring continuous protection. This lock only supports the encrypted NFC cards officially provided by eufy.
You save $69.75

Google Nest Hello Video Doorbell (Wired) Model NC5100US - Tested – Works Great
Google Nest Hello Video Doorbell (Wired) - Model NC5100US. Model: NC5100US (Nest Hello). 1x Google Nest Hello Video Doorbell (NC5100US). Smart Wi-Fi Video Doorbell | HDR Video | Night Vision | 24/7 Streaming.
You save $4.60

Tapo D225 Smart WiFi Wireless Video Doorbell 180° FOV 2K HD Read Ad
Product is Preowned! USB adapter cable, 10. 2 of the screws and 1 anchor, 12. doorbell detaching pin & 14. 4 mounting wedge screws. Both the 3M adhesive (14) & foam pad (15) have been used.

eufy Wireless Video Doorbell C30 2K FHD Security Cam Intercom Ring Call 16:9View
Seamlessly integrate your doorbell with a range of devices. Note: The Video Call is currently only supported for Solo use. The HB3 version that supports Video Call is expected to be released in late November.
You save $27.25

eufy Smart Lever Lock C33 Fingerprint Keyless Entry Door Lock Deadbolt w/ Handle
It's not compatible with these services yet. The lock remains operational throughout the year, ensuring continuous protection. This lock only supports the encrypted NFC cards officially provided by eufy.
You save $75.00

AOSU Smart Wireless Video Doorbell with Camera Security, Compatible with Alexa
Our vision is to protect what you care about most and bring you peace of mind. You can also use a voice changer to protect your privacy or scare off people with bad intentions.
You save $49.49

Ring Wired Doorbell Plus (Video Doorbell Pro) Video Camera 1080p HD Wifi Cam
The installation kit, user's manual and power kit are not included.

eufy Security Wireless Video Doorbell 2K Dual Camera Dual Motion Detect |Refurb
Greet Guests From Anywhere. See Detailed 2K HD. Know with certainty who's at your door with 2K HD. 2K with HDR With accurate Dual Motion Detection, false alarms are reduced by 95%. Dual Motion Detection.
You save $136.50

Google Nest Doorbell (Wired, 3rd Gen) 2K Video and Gemini (Doorbell Only-Read)
(No bracket). "CompUTerritory". (No scratches on the Lens).

eufy S330 Video Smart Lock Wi-Fi Camera Doorbell Fingerprint Keyless Door Lock
How to unlock Video Smart Lock S330 when the battery dies?. Does the lock still work with a key if out of power?. What kind of door is Video Smart Lock S330 compatible with?. What's the difference between Video Smart Lock S330 and E330?.
You save $143.99

2x Ring Rechargeable Battery V4 Ring Video DoorBell 2 3 4 Quick Release 5AT3S3
Model Number: 5AT3S3. Compatible with the following devices:Ring Video Doorbell 2. Ring Video Doorbell 3. Ring Video Doorbell 3 Plus. Ring Video Doorbell 4. Ring Battery Doorbell Plus. Ring Battery Doorbell Pro.

eufy Video Doorbell Camera C31 2K FHD Security Phone Door Ring Intercom |Refurb
Seamlessly integrate your doorbell with various devices. Note: The Video Call is currently only supported for Solo use. The HB3 version that supports Video Call is expected to be released in late November.
You save $45.60

eufy Wi-Fi Wireless Video Doorbell C30 2K Security Camera Smart Doorbell
Enjoy crystal-clear, detailed visuals of who's at your door with 2K FHD clarity, even at night. With a 16:9 expanded view, see a wider picture of your entire front door area. 1 x C30 Video Doorbell.
You save $96.80

Google - Nest Doorbell (wired, 3rd gen) - 2K Video and Gemini - Hazel
Item has been tested and works great.

eufy Security Smart Lock C220 Fingerprint Keyless Entry Door Lock Built-in Wi-Fi
Easy setup. Self-learning AI: Fingerprint door lock recognition gets more precise with every touch, so you don't have to try agian and again to get in. 【6 Ways to Unlock】Unlock with a touch for less than 1s with fingerprint lock.
You save $93.50

eufy Dual Camera Smart Video Doorbell + Chime 2K HDR Security Cam work w/ Alexa
Eufy Security Video Doorbell Dual (Wired). Enable the eufy Security skill on your Alexa App. Link the eufy Security account to Alexa. Video Doorbell Dual (Wired): L5.4 x W2.0 x D1.1 in (L13.8 x W5.0 x D2.7 cm).
You save $98.77

eufy FamiLock S3 Smart Lock Palm Vein Recognition Keyless Entry Door Lock Wi-Fi
Which eufy devices and systems are eufy FamiLock S3 compatible with?. What kind of doors are eufy FamiLock S3 compatible with?. Compatible with most standard doors, door thickness:35-55 mm. It supports the Matter protocol.
You save $149.99

Google Nest Wired (2nd Generation) Doorbell GA02767-US - Snow
And all other accessories. What's not included.

Google Nest Doorbell (Battery) Wireless Doorbell Video Camera Snow *READ
There is a mark in the middle of the lens which slightly distorts the image. You are still able to see what is going on, there just is a light blur in the middle where the mark is.
You save $20.04

eufy Wireless Video Doorbell 2K Security Cam Intercom 16GB Local Storage|Refurb
2.5x the Clarity: The built-in Sony 2K sensor and professional-grade lens allow you to view activity in picture-perfect resolution. On top of the high quality, we also stand behind our products to provide greatservice.
You save $3.50

eufy Security Add-on Chime for Video Doorbell (Wired) Adjustable Volume| Refurb
Official Accessory - Works with all eufy Security wired doorbells. At Anker we take a different approach to the market. Traditional accessories market has been all about price. That is, cheaper, cheaper and even cheaper.
You save $7.20

Level Lock Pro Keyless & Remote Access via Apple/Alexa/Google Home/SmartThings
This kit is for parts, missing back plate and some screws. Lock does not power on has not been tested further.

eufy Security S230 Smart Lock Touch Fingerprint Keyless Entry Door Lock Deadbolt
Eufy Security Smart Lock S230, Fingerprint Door Lock, Keyless Entry Door Lock, Smart Door Lock, One-Year Battery Life, Touchscreen Keypad, BHMA Certified, IP65 Weatherproofing [Certified Refurbished].
You save $101.99

Google Nest x Yale Smart Lock Deadbolt Keyless Entry Part missing For Parts only
Google Nest x Yale Smart Lock Deadbolt Keyless Entry Part missing For Parts only not working parts only please see all photos as its missings parts thank you

Xfinity Video Doorbell SCHB1AEW WiFi Smart Home Security Camera Black White
Xfinity Video Doorbell SCHB1AEW provides smart home security with high-definition video monitoring. This WiFi-enabled device features a sleek black and white design with a built-in camera and doorbell button. It is designed for easy integration with Xfinity Home systems, allowing for real-time alerts and two-way communication. The unit comes with a white trim plate and a mounting bracket. Ideal for enhancing front door security and convenience.
You save $6.25

eufy E340 Wireless Video Doorbell Security Dual Camera with Extra Battery|Refurb
Plus, enjoy the convenience of storing your data locally without any subscription fees. Installation and removal are easy, and with two batteries, you can ensure uninterrupted operation throughout the year.
You save $87.99

Google Nest GA03013-US WiFi Smart Video Doorbell (Battery) - Linen
Scratches and scuffs on the body. Also subject to change especially during peak periods.
You save $12.40

Geeni Halo 2K Video Doorbell Camera Battery or Wired w/ Chime Alexa Google

eufy Security Smart Lock 5-in-1 Keyless Entry Door Lock Built-in WiFi Deadbolt
Avoid separate bridges with complex installation. It works with eufy doorbell. Easy setup. No difference between C210 and E110. 5 Ways to Unlock: Open your smart lock via the eufy Security app, using the keypad or physical key, from Apple Watch, or use your voice with Alexa/Google Voice Assistant.
You save $27.80

eufy Wireless Video Doorbell C30 2K FHD Intercom Live Video Call Motion Detect
The eufy Wireless Video Doorbell C30 2K FHD Intercom Live Video Call Motion Detect is gently used and in great working condition. Includes only what is shown. No usb-C charger, detaching pin, or screw pack is included. Please see all the photos for a more detailed look at the condition and the features. Feel free to message me at any time with any questions.

eufy Smart Lock C220 Fingerprint Keyless Entry Door Lock Built-in Wi-Fi Deadbolt
Easy setup. Self-learning AI: Fingerprint door lock recognition gets more precise with every touch, so you don't have to try agian and again to get in. 【6 Ways to Unlock】Unlock with a touch for less than 1s with fingerprint lock.
You save $84.50

Google - Nest Doorbell (wired, 3rd gen) - 2K Video and Gemini - Snow
Item has been tested and works great.

eufy Security Wireless Video Doorbell 1080P Smart Door Ring Camera w/Alexa+Chime
Eufy Security 1080p-Grade Battery Video Doorbell. Get instant alerts for anyone who approaches, even if they don’t press the doorbell. Draw an Activity Zone to customize the area in which motion is detected.
You save $103.50