Devices that still work when the internet doesn't.

Lighting & Electrical / dimmer

Lutron DVCL-153P

D0 No Radio — No radio at all. It cannot phone home.

The unplug test

There is no router for this device to notice. It sits inline with the wiring in the wall box and the light responds to the slide and paddle whether or not anything else in the house has power. The only way this dimmer stops working is a burned-out TRIAC or a bulb it doesn't like the dimming curve of, and either is fixed by hand, not by a server somewhere.

Why this tier: A TRIAC-based in-wall paddle dimmer wired directly into the lighting circuit, with a mechanical slide for level and a mechanical paddle for on/off. No radio, no app, no account, no FCC grant on record. Lutron's own wireless dimmers (the Caseta line) are filed under the same grantee code and are easy to find on fccid.io, so the absence of any grant for this model is meaningful rather than a search failure.

Specifications

Account requirednone
Works offlinefully
Forced firmware updatesno
Radiosnone
FCC IDno intentional-radiator grant found
Local controlnone
Phones homenone
Parts availableunknown
Availabilityin stock
Price band$15-25 (seen 2026-09-03)
Vendor risk 0 / 3

Where to buy

Sources

Class A is primary (manual, FCC filing, teardown). Class B is corroborated community reporting. Class C is never sufficient alone.

History

Last verified 2026-09-03 — 3 days ago.