Arlo Video Doorbell 2K (2nd Generation): problems, parts and running costs
Checked: 2026-10-15
Summary
The problems documented for this model are identification problems rather than failures: it shares its chassis with the 1080p Arlo Video Doorbell HD 2nd Gen, and the listings differ on whether a Chime 2 is in the box, so match the item number AVD4001 before ordering. Nothing published for this model lists a consumable, a subscription or an electricity figure, so a yearly running cost cannot be given, and no street price is on record to set a buy threshold against. Within Arlo’s own doorbell line it is the one to pick when you want 2K resolution and the choice of a wired or a wireless install.
Common problems and fixes
- Mistaking it for the 1080p Arlo Video Doorbell HD 2nd Gen — the two share the same chassis family, so a shopping page can show both with near-identical names; only the 2K in the title and item number AVD4001 tell them apart. This is the most likely way to end up with the lower-resolution sensor instead of the one you paid for. [1][2]
- Chime in the box or not — two US configurations exist: AVD4001-100NAS is the doorbell alone and AVD4001-100CNS is the doorbell with Chime 2, and the listings for the two sit close together on the same product page. Read the SKU suffix before you order if you need an indoor chime. [1][3]
- Older and look-alike models in the same listings — the 1st generation Arlo Video Doorbell (AVD1001/AVD3001), the Arlo Essential Video Doorbell Wire-Free and the Blink “Video Doorbell (2nd Gen)” are different products that appear under similar names. The manufacturer item number AVD4001 is the only reliable check. [1][2][4]
- Regional variants sold next to the US one — Arlo publishes AVD4001-100AUS for Australia and AVD4001-100APS for Singapore alongside the US AVD4001-100NAS and AVD4001-100CNS. Order the US suffix for a US door. [1]
Parts and consumables
No other replaceable parts or consumables are reported for this model, and no separate parts list is published. [1][4]
Yearly running cost
Not enough data. Nothing published for this model lists a subscription, a consumable replacement interval or an electricity draw, so no yearly figure can be computed.
When it is a good buy
No street price for this model is on record in the sources reviewed, so no price threshold can be set, and the choice between Arlo’s own doorbells is about hardware rather than price. The Arlo Video Doorbell HD (1080p) 2nd Gen is the better pick when you do not need 2K resolution, because it shares the chassis; the Arlo Essential Video Doorbell Wire-Free is the better pick when a wire-free-only unit fits and the wired fallback is not needed.