I wand to control some 220V lights with 12V but don't want the noise of s normal relay. So I saw these SSR but do not understand what Low level and High level mean. Is high level normally closed or normally open? And can these be controlled only with 12v? I ask this because they say 12V, but there is a + and a - where i understand you hook up the 12V, what than is has that CH1 input where they say you have to connect 5V to. So I need 12V to operate it and 5V to trigger it?


  • 1
    \$\begingroup\$ "No datasheet? No sale!" \$\endgroup\$ – Transistor Feb 21 at 23:24
  • \$\begingroup\$ The English is so poor on that link that it is hard to be confident. \$\endgroup\$ – evildemonic Feb 21 at 23:29

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.