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General => General Technical Chat => Topic started by: matseng on November 25, 2017, 02:10:50 pm

Title: What logo is this? [R]
Post by: matseng on November 25, 2017, 02:10:50 pm

Both these devices have a logo/symbol that looks like a capacitor and a part of a flash inside a ring next to the R-in-a-square.  I guess that it is some kind of a conformity/approval logo considering the 3+6 character code to the right of them.

But who are issuing them? I can't find either the cap-logo or the [R] in google image search. And searching for the "approval" code doesn't give any relevant hits either.

Title: Re: What logo is this? [R]
Post by: Cerebus on November 25, 2017, 02:31:35 pm

Certainly looks like some kind of EMC conformity marking (lightning bolt for radiated, cap for conducted?), but I can't say I recognise it.

I'm curious to know who it is because if it is a conformity mark I feel that I ought to already know it.

Title: Re: What logo is this? [R]
Post by: MAS3 on November 25, 2017, 02:54:19 pm

Hi.

Espressif lists their products certifications (http://espressif.com/en/certificates?field_product_value%5B%5D=ESP-WROOM-02).
It is TELEC certification (http://espressif.com/sites/default/files/esp-wroom-02_telec_certificate.pdf), and once you know that, it is easy to google it.

Title: Re: What logo is this? [R]
Post by: Jeroen3 on November 25, 2017, 03:24:57 pm

I optimised the image and did a reverse google image search. It is indeed Japanese TELEC.