Hey all,
Thanks for the replies, the relays get a constant 12 volt from the plug and when they get 5 volts form the arduino they send the 12 volt through, atleast thats what i thought. Solid state relays. Here is the one im using, im using 2 because i need 6 of the relays: https://nl.aliexpress.com/item/free-of-charge4-road-5-v-10A-optical-coupling-isolation-relay-module/32304609560.html?spm=a2g0s.9042311.0.0.GGImNM
I am using a Arduino Uno.
Ill look at the code you send Tom!