Doorbell Wire Check product guide
Blink Video Doorbell (2nd Gen), Black, Add-On without Sync Module
A household that already owns a Blink Sync Module
Blink's second-generation Video Doorbell runs on three replaceable AA lithium cells, shoots a square 1440 by 1440 image with a 150 degree head-to-toe view, and can be wired to 8-24VAC so your existing chime still rings. This particular listing is the add-on version: the required Sync Module is not in the box. Person detection, saved clips and the smarter alerts need a Blink plan.
Listing checked . Confirm the model, included parts and availability before ordering.
Published specifications
- Listing title: required Blink Sync Module is NOT included with this add-on
- Blink: 1440 x 1440p, 1:1 aspect, 30 fps, 150 degree head-to-toe field of view
- Blink: three AA 1.5V lithium non-rechargeable cells included; up to two years claimed
- Blink: existing chime wiring 8-24 VAC, 50-60Hz, 40VA maximum
- Blink: 2.4 GHz 802.11b/g/n only; always-on broadband required; iOS 17 / Android 10
- Blink: operating -5F to 113F; one-year limited warranty and service included
Fit and limits
Strengths
- Wired installation makes an existing in-home chime ring, per Blink's own article
- Replaceable AA lithium cells instead of taking the unit down to recharge it
- Box includes wire extenders, a drill template, a wall plate and a removal tool
Caveats
- This add-on listing does not include the Sync Module the doorbell requires
- Person detection, saved clips and richer alerts all need a paid Blink plan
- Blink says digital chimes do not typically supply enough power, and third-party wireless chimes are unsupported
Read the words Add-On before anything else
The title of this ASIN ends with "Required Sync Module not included - Add-On (Black)". That is the single most important fact on the page. Blink's bullets say the doorbell needs a Blink Sync Module, sold separately, and the two-year battery claim is stated as being with the three included AA lithium batteries and a Sync Module. If you do not already own a Sync Module, this listing on its own does not give you a working doorbell.
Blink's technical details call this the 2nd Generation Video Doorbell and give the body as 1.85 by 5.12 by 1.44 inches, weighing 4 ounces, in black or white. The app is Blink Home Monitor, and the minimum phone requirements are stated bluntly: iOS 17, Android 10, or Fire OS 8 only.
The box, per those technical details, holds one Video Doorbell, three AA 1.5V lithium batteries, a wall plate, a wall mounting kit, a doorbell removal tool, two wire extenders, a drill template and a doorbell removal key. The two wire extenders and the drill template are genuinely useful inclusions; several competing doorbells make you supply both.
Power: three AA lithium cells, with wiring as an option
This doorbell runs on three AA 1.5V lithium metal batteries, which Blink's technical details describe as non-rechargeable. That is a different model from a rechargeable pack: you do not take the doorbell down to charge it, you replace the cells. The headline claim is up to two years of battery life on the included Energizer lithium set, quoted with a Sync Module in the system.
You can also wire it in. Blink's technical details give existing chime wiring at 8-24 VAC, and the chime support article repeats the requirement as 8 to 24 volts AC at 50-60Hz with 40VA maximum to the doorbell. Wiring is optional rather than required, which is why this is sold as a battery doorbell.
The operating temperature range in the technical details is -5°F to 113°F (-20° to 45°C). The listing's Alexa panel and bullets describe it as weather resistant without giving an IP rating, and no IP figure appears in the technical details we read. If an exact ingress rating matters to you, ask Blink.
Whether your existing chime rings, and what to do if it will not
Blink answers this more clearly than most makers. Its bullet says that when wired, the Video Doorbell will sound through your home, and its comparison table's in-home ring row for this model reads "Works with in-home ring when wired". Blink's chime support article puts it the same way: if you wire the doorbell to compatible chime wiring, your in-home chime will sound for doorbell button presses.
The same article adds the caveat that decides it for many houses. It describes mechanical chimes as having physical moving parts that produce the familiar ding-dong, and says of digital chimes, which play a sound or melody through a speaker, that they "do not typically provide sufficient power". That is Blink's own wording, reported here rather than generalised. Blink also links its own article on checking your doorbell system's voltage, which is the step to take before ordering.
If you are not wiring in, Blink gives two routes to an indoor sound. The listing's bullet says you can use a Blink Mini 2 camera, sold separately, as an indoor plug-in chime; the support article adds Alexa Doorbell Announcements as the other option, and names a Blink Chime elsewhere in its support material. One restriction is stated plainly: "Blink products do not support third party bluetooth or wireless accessories at this time", so an existing wireless chime from another brand is not a plan.
What you see: a square 1440p frame with a 150 degree view
Blink's technical details give video resolution as 1440 by 1440p at 30 frames per second, with a 1:1 aspect ratio and a 150 degree field of view described as horizontal and vertical. As with other square-sensor doorbells, the point of the shape is the vertical reach: Blink calls it head-to-toe HD view, meaning you can see a parcel on the doorstep as well as a face.
Blink's own comparison table on this listing puts that in context against its stablemates: the Wired Doorbell 2K+ and Battery Doorbell 2K+ are listed at 1920 by 1920p with a 140 degree head-to-toe view, while this model is listed at up to 1440p with 150 degrees. So this one trades resolution for a slightly wider frame.
Night vision is infrared, per the listing's bullets, and two-way talk works through the Blink app. On-device indicators are a recording indicator and a button LED. The doorbell works with Alexa devices for answering the door by voice.
The subscription line, and where it moves
Blink's comparison table on this listing marks Person Detection as "Available with Blink Plan (sold separately)" for all three of its doorbells, and carries the same note on the Motion-Activated Alerts row. The bullets say that as part of a Blink Subscription Plan, sold separately, you get alerts whenever a person is detected plus features such as Blink Moments, which stitches clips into a single video to save and share, and that cloud storage of your footage comes with the plan.
A free trial is included but its terms are specific, and the listing's own Blink plans notice spells them out: purchase includes a 30-day trial of Plus ai, but due to state-specific legislation, Illinois customers receive a Plus plan trial instead. The same notice says the trial is not applicable for locations with an existing plan and that the trial begins as soon as the device is set up, not when you first choose to use it.
What that means practically: the doorbell button press, the live view and two-way talk are the device's own functions, while saved clips, person detection and the smarter alerts sit behind the plan. Decide which of those you actually need before you compare this against a doorbell that stores locally.
Network requirements, warranty and the document that is not a spec sheet
Blink's requirements line is short and firm: an always-on high-speed internet connection such as broadband, fibre or DSL, and a Wi-Fi network on 2.4 GHz 802.11b/g/n. There is no 5 GHz option listed. Combined with the Sync Module requirement, this is a system that assumes a always-connected home network rather than a self-contained local link.
The warranty entry in Blink's technical details reads "One-year limited warranty and service included", with a link to Blink's terms. Blink also references software security updates with a link to device-specific information. Neither the listing nor the chime article states a theft or loss replacement policy, so if that matters, ask Blink directly.
One note on documents. The only PDF linked from this listing is a Product Sustainability Fact Sheet updated May 2025. It is a real Blink and Amazon document, and it states a 17 kg CO2e total carbon footprint, 33 per cent recycled materials with 45 per cent post-consumer recycled plastic, and 100 per cent recyclable packaging. It contains no technical specification at all, so do not go to it looking for wiring or installation detail; the technical details block on the listing and Blink's support site are where that lives.
Check the current listing
Confirm the model, included parts and availability before ordering.
Primary sources
- Blink support article on mechanical and digital chime systems for the Video Doorbell
- Blink Video Doorbell Product Sustainability Fact Sheet, May 2025, linked from the listing
Primary sources checked .
Compare with
- Arlo Video Doorbell 2K (2nd Gen), Wireless or Wired
A 2.4GHz home where live view and basic alerts are enough without a plan
- eufy Security Video Doorbell E340 with Dual Cameras
A porch where parcels matter and you want no monthly fee
- TP-Link Tapo D225 2K Video Doorbell with Indoor Chime
A wired door where you want local recording and no monthly plan
Side-by-side pages, this model next to: Arlo Video Doorbell 2K (2nd Gen), Wireless or Wired, eufy Security Video Doorbell E340 with Dual Cameras, TP-Link Tapo D225 2K Video Doorbell with Indoor Chime.