I have some experience using automotive relays and triggering them using the output from a two-way radio aux pin so I am aware of the need to add a diode in parallel with the coil to protect the radio's internal transitor when it is turned off.
However, I'm planning on doing a xmas project using a PIC MCU to turn on/off my xmas lights but I'm going to use solid state relays instead of the automotive type.
I haven't used SS relays before. From a quick look at some schematics from Google, it appears that the control signal wouldn't suffer from the same EMF that needs a flyback diode. Am I correct or do I still need one to save my PIC from destruction?
Thanks for your help.