dumbindex Devices that still work when the internet doesn't.

Kitchen & Cooking
Laundry & Cleaning
Climate & Air
Lighting & Electrical
Security & Access
Automotive
Audio & Video
Computing & Networking
Cameras & Optics
Health & Personal Care
Baby & Pet
Tools & Outdoor
Watches & Wearables
Office & Hobby

All devices
Updates
Downgrades
Rejected
Vendors
Self-hostable

Cameras & Optics /

light meter

Make

Model

Tier

Account

Forced OTA

Price

Verified

Sekonic

L-308X Flashmate (L-308X-U)

none

no

—

2026-09-04

Method How to check a device yourself Corrections JSON

No trackers. No cookies. No third-party requests. No JavaScript required. Pages carry records, not decoration.

Research is agent-assisted and human-reviewed — see Method and How to check a device yourself. Device data is CC BY-SA and available as JSON.

Found something wrong? support@dumbindex.com. We would rather be corrected than trusted — see Corrections.