Nest Protect smoke + CO alarm (1st gen) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/google-nest-protect-1st-gen/  (sheet CC BY 4.0)
Basis: Manufacturer specifications (Google)
Catalog version: 2026-10-20

Overall (mm): length 134, width 134, height 41
- Nest Protect smoke + CO alarm (1st gen) measures 134 × 134 × 41 mm (5.28 × 5.28 × 1.63 in) according to Google; height × width × depth of the alarm as published by Google (13.4 × 13.4 × 4.1 cm).
- The file is a plain bounding box at the published size: the rounded-square body, centre button, light ring and mounting plate are not modelled.
- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.

dimension  value
Height  134 mm (5.28 in)
Width  134 mm (5.28 in)
Depth  41 mm (1.63 in)
Weight  372 g (13.1 oz) battery model; 352 g (12.4 oz) wired 120V model

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Google: Nest Protect technical specifications - Google Home and Nest Help — web — Publisher's page; dimensions are facts — https://support.google.com/googlehome/answer/9229922?hl=en

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/google-nest-protect-1st-gen/index.json
API: https://xemstudio.com/api/geometry?object=google-nest-protect-1st-gen