Blink Video Doorbell (2nd Gen), Black, Add-On without Sync Module vs eufy Security Video Doorbell E340 with Dual Cameras
These are side-by-side facts taken from each product guide: published specifications, strengths and caveats as their sources state them. This page is not a test, a ranking or a verdict about which model is better.
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.
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
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 full Blink Video Doorbell (2nd Gen), Black, Add-On without Sync Module guide
eufy Security Video Doorbell E340 with Dual Cameras
A porch where parcels matter and you want no monthly fee
The E340 uses two cameras, one for visitors head-to-toe and one aimed down at the step, and records to 8GB of built-in storage with no subscription. The battery pack lifts out for swapping, or you can wire it to a 16-24V supply and keep it topped up. eufy documents keeping your existing mechanical chime, and adds HomeBase, its own chime, Alexa and Google as alternatives.
Published specifications
- Guide: model T8214; primary and secondary camera lenses with an LED beside each
- Listing: 8GB eMMC local storage, no subscription; 2K video, IP65, outdoor use
- Listing: colour dual-light night vision to a stated 16 ft (5 m), two IR LEDs
- Listing: wire to a 16-24V supply, or use the removable rechargeable battery pack
- Guide: mount at 48 in (1.2 m); 15/64 in (5.95 mm) bit for brick, concrete or stucco
- Guide and eufy: existing mechanical chime, eufy chime, HomeBase, Alexa or Google
Strengths
- Second downward camera covers the doorstep instead of relying on a tall crop
- 8GB of built-in storage with recordings and playback at no monthly cost
- Battery pack lifts out for swapping, and spare packs are sold separately
Caveats
- Amazon lists a 128 GB capacity the user guide does not support; storage is 8GB eMMC
- Neither document explains how the existing mechanical chime is actually driven
- No warranty period is stated on eufy's page or on the listing
Read the full eufy Security Video Doorbell E340 with Dual Cameras guide
How to choose between them
Choose the Blink Video Doorbell (2nd Gen), Black, Add-On without Sync Module if your situation matches: A household that already owns a Blink Sync Module. Its main caveat: This add-on listing does not include the Sync Module the doorbell requires.
Choose the eufy Security Video Doorbell E340 with Dual Cameras if your situation matches: A porch where parcels matter and you want no monthly fee. Its main caveat: Amazon lists a 128 GB capacity the user guide does not support; storage is 8GB eMMC.
Both entries repeat what each guide records. Confirm the model, included parts and availability on the current listing before ordering.
Primary sources
- Blink support article on mechanical and digital chime systems for the Video Doorbell Source for Blink Video Doorbell (2nd Gen), Black, Add-On without Sync Module
- Blink Video Doorbell Product Sustainability Fact Sheet, May 2025, linked from the listing Source for Blink Video Doorbell (2nd Gen), Black, Add-On without Sync Module
- eufy product page for the Video Doorbell E340 Source for eufy Security Video Doorbell E340 with Dual Cameras
- eufy Security Video Doorbell E340 user guide (T8214), attached to the listing Source for eufy Security Video Doorbell E340 with Dual Cameras
Primary sources checked .