Blink Video Doorbell (2nd Gen), Black, Add-On without Sync Module vs TP-Link Tapo D225 2K Video Doorbell with Indoor Chime
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
TP-Link Tapo D225 2K Video Doorbell with Indoor Chime
A wired door where you want local recording and no monthly plan
The Tapo D225 ships with its own plug-in indoor chime, both mounting wedges and the fixings, and records to a microSD card of up to 512 GB with no subscription. It runs on a 10,000mAh rechargeable battery or on 8-24V AC wiring. Hardwiring unlocks 24/7 recording and pre-roll, but the quick start guide is clear that doing so means fitting a jumper wire to bypass your existing chime.
Published specifications
- Datasheet: 2K 4MP (2304x1728), 15/20 fps, 16x digital zoom, H.264
- Datasheet: 170.6 deg horizontal / 140.1 deg vertical lens; 180 deg diagonal claimed
- Guide: hardwiring needs an 8-24V AC, 10VA minimum transformer; DC 9-24V also allowed
- Guide: Always-On 24/7 recording requires the jumper wire that bypasses your chime
- Datasheet: microSD up to 512 GB, not included; free person, pet, vehicle, package AI
- Datasheet: doorbell -20 to 45 C, IP66; chime indoor only, 0 to 40 C
Strengths
- Indoor chime, both wedges, template, adhesive, anchors and wire nuts all included
- Records to a microSD card with AI detection and activity zones at no monthly cost
- Runs on battery or wiring, and hardwiring adds pre-roll and 24/7 recording
Caveats
- 24/7 recording means jumpering out your existing chime, so the old bell stops ringing
- The USB charger is not supplied and a first charge takes about six hours
- Datasheet and Amazon fields disagree on resolution, night-vision range and IP rating
Read the full TP-Link Tapo D225 2K Video Doorbell with Indoor Chime 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 TP-Link Tapo D225 2K Video Doorbell with Indoor Chime if your situation matches: A wired door where you want local recording and no monthly plan. Its main caveat: 24/7 recording means jumpering out your existing chime, so the old bell stops ringing.
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
- TP-Link Tapo D225 Video Doorbell Camera datasheet, attached to the listing Source for TP-Link Tapo D225 2K Video Doorbell with Indoor Chime
- Tapo Video Doorbell Camera quick start guide 7106511276 REV1.0.1, attached to the listing Source for TP-Link Tapo D225 2K Video Doorbell with Indoor Chime
Primary sources checked .