I bought this Arduino Relay Board. https://www.dropbox.com/s/emgdcm33190unse/ArduinoRelayBoard.jpg?dl=0 It's about 33mm by 20mm. The mains contacts are on the left, the control contacts on the right. What bothers me is the trace from one of the control contacts that runs across the isolation barrier, near to the mains contacts. It runs to a diode, from which another traces runs back to the right. The packaging carries a CE label, but I find it difficult to believe that this is actually safe. Sylvia.
Arduino Relay Board
Started by ●February 3, 2022
Reply by ●February 3, 20222022-02-03
Sylvia Else wrote: ===============> > I bought this Arduino Relay Board. > > https://www.dropbox.com/s/emgdcm33190unse/ArduinoRelayBoard.jpg?dl=0 > > It's about 33mm by 20mm. > > The mains contacts are on the left, the control contacts on the right. >** So the relay is rated for 230/240V AC?> What bothers me is the trace from one of the control contacts that runs > across the isolation barrier, near to the mains contacts. It runs to a > diode, from which another traces runs back to the right. >** That is not enough clearance for 240V. Be fine for 12VDC or AC though.> The packaging carries a CE label, but I find it difficult to believe > that this is actually safe.** Then don't. ....... Phil
Reply by ●February 3, 20222022-02-03
On 03-Feb-22 5:28 pm, Phil Allison wrote:> Sylvia Else wrote: > =============== >> >> I bought this Arduino Relay Board. >> >> https://www.dropbox.com/s/emgdcm33190unse/ArduinoRelayBoard.jpg?dl=0 >> >> It's about 33mm by 20mm. >> >> The mains contacts are on the left, the control contacts on the right. >> > ** So the relay is rated for 230/240V AC?Yes. Sylvia.
Reply by ●February 3, 20222022-02-03
In article <j618kbF9s19U1@mid.individual.net>, sylvia@email.invalid says...> > I bought this Arduino Relay Board. > > https://www.dropbox.com/s/emgdcm33190unse/ArduinoRelayBoard.jpg?dl=0 > > It's about 33mm by 20mm. > > The mains contacts are on the left, the control contacts on the right. > > What bothers me is the trace from one of the control contacts that runs > across the isolation barrier, near to the mains contacts. It runs to a > diode, from which another traces runs back to the right. > > The packaging carries a CE label, but I find it difficult to believe > that this is actually safe. > > Sylvia.I imagine you have something like Trading Standards with which you could raise a CE accreditation query. However it is a bit niche and they may reasonably give priority to verifying (e.g.) childs' toys...
Reply by ●February 3, 20222022-02-03
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Sylvia Else wrote:> > What bothers me is the trace from one of the control contacts that runs > across the isolation barrier, near to the mains contacts. It runs to a > diode, from which another traces runs back to the right.It's hard to tell since it's just a bottom shot, but given the positioning, I'd hazard that's the flyback diode for when the coil field is collapsing.> The packaging carries a CE label, but I find it difficult to believe > that this is actually safe.In the general sense, it it perfectly safe to use in arduino projects. Whether or not it is "safe" for the project you had in mind for it is another matter entirely. -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEE3asj+xn6fYUcweBnbWVw5UznKGAFAmH7uHAACgkQbWVw5Uzn KGAMtA//TYJRc8n6EvMdXWHxWZAICTL5677+X5wYmp/WoG0qJmB5V4x9GupUt0hs 17jS15JfM+0/YjmUu38ztoXpDuGtwCgunJIYRfZ++cmkNZBmhsF8l6Jc3PrnmE4V WJ8PzibkpPx627n6cB2sJSKw7F5Np4ZuVP3NZWqhoQJPLCqsIh6e0wxj0QgIbr+U uleXoLizgCAh2t9VtMujS87k1cLt4huBctReuNGJQwfig/slybtVRol7vKsfN6t3 AI4Dh69Er/C2Oe+mZ7jjqiZAQemkPKMoJ/wxbcVMfLTVoGqt9Doogo+0qjQEvoV9 +XKpjZk21d0aLJjBDHkRAAUtJeVD72L3KrmjTPgykVE+0axfsMTWb1PDweA6vBiM MlZ+9kWGGRgqf7Xn93BionaH1WF3PZnAaNFW+wDnb5d+NQ+l/1I9JZ6TBhSh7l/v OscZ7eGpHLC4QVJ/o6DanL7kdTvjmB902+B2DFIA61e7hPQv3qB6d279zfPFAjiy riyi/1wSttNw8B+G2Yt0jyqpQdBWitM8/8cgna49MhWTBpT+6kv4zprr9++/uh12 wIKjWElQtiJ/dKz7iyiqJh+0yUo7rHCsI4okhcAjNNFQbMmRKqSr/mbkMH0HWPJS gpkD75H6Yv/sRiHpIXwi0OGXHhCks/TEwbTeZnNbDiw1eOFCOPo= =aego -----END PGP SIGNATURE----- -- |_|O|_| Github: https://github.com/dpurgert |_|_|O| PGP: DDAB 23FB 19FA 7D85 1CC1 E067 6D65 70E5 4CE7 2860 |O|O|O|
Reply by ●February 3, 20222022-02-03
On 03/02/2022 05:47, Sylvia Else wrote:> I bought this Arduino Relay Board. > > https://www.dropbox.com/s/emgdcm33190unse/ArduinoRelayBoard.jpg?dl=0 > > It's about 33mm by 20mm. > > The mains contacts are on the left, the control contacts on the right. > > What bothers me is the trace from one of the control contacts that runs > across the isolation barrier, near to the mains contacts. It runs to a > diode, from which another traces runs back to the right. > > The packaging carries a CE label, but I find it difficult to believe > that this is actually safe. > > Sylvia.gap 240v to LVDC should be 5mm ? -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
Reply by ●February 3, 20222022-02-03
On 02/03/2022 06:47 AM, Sylvia Else wrote:> I bought this Arduino Relay Board. > > https://www.dropbox.com/s/emgdcm33190unse/ArduinoRelayBoard.jpg?dl=0 > > It's about 33mm by 20mm. > > The mains contacts are on the left, the control contacts on the right. > > What bothers me is the trace from one of the control contacts that runs across the isolation barrier, near to the mains contacts. It runs to a diode, from which another traces runs back to the right. > > The packaging carries a CE label, but I find it difficult to believe that this is actually safe. > > Sylvia.It's that self-certification thing, innit? In Principle anyone can slap a CE sign on a board. Consequences will only arise if somone complains.
Reply by ●February 3, 20222022-02-03
On 3.2.22 7.47, Sylvia Else wrote:> I bought this Arduino Relay Board. > > https://www.dropbox.com/s/emgdcm33190unse/ArduinoRelayBoard.jpg?dl=0 > > It's about 33mm by 20mm. > > The mains contacts are on the left, the control contacts on the right. > > What bothers me is the trace from one of the control contacts that runs > across the isolation barrier, near to the mains contacts. It runs to a > diode, from which another traces runs back to the right. > > The packaging carries a CE label, but I find it difficult to believe > that this is actually safe. > > Sylvia.Are you sure that the label is the EU conformity label and not the very similar-looking China Export label. In principle, the EU CE label is a declaration by the manufacturer that the product conforms to the relevant safety requirements. It is up to the conscience of the manufacturer how well this is done. -- -TV
Reply by ●February 3, 20222022-02-03
In article <stgovt$vqe$1@dont-email.me>, tauno.voipio@notused.fi.invalid says...> > Are you sure that the label is the EU conformity label and not the > very similar-looking China Export label. > > In principle, the EU CE label is a declaration by the manufacturer > that the product conforms to the relevant safety requirements. It > is up to the conscience of the manufacturer how well this is done. > > >You beat me to it. I was going to say that the CE was probably the China Export instead of the EU CE for safety.
Reply by ●February 3, 20222022-02-03
torsdag den 3. februar 2022 kl. 16.33.20 UTC+1 skrev Ralph Mowery:> In article <stgovt$vqe$1...@dont-email.me>, tauno....@notused.fi.invalid > says... > > > > Are you sure that the label is the EU conformity label and not the > > very similar-looking China Export label. > > > > In principle, the EU CE label is a declaration by the manufacturer > > that the product conforms to the relevant safety requirements. It > > is up to the conscience of the manufacturer how well this is done. > > > > > > > You beat me to it. > > I was going to say that the CE was probably the China Export instead of > the EU CE for safety.afaik the "China Export" is just an urban myth, in reality it was just someone that didn't follow the spec for how the CE mark should look
