Dear Piclisters, I have yet another question for you. I am still a newbie in electronics and PIC's and I feel a little bit shamed that I only come to ask questions on this list and rarely know how to answer to other questions, but hope that someday I will be able to be more active here. My questions is: I want to drive a siren from a microcontroller pin. The siren is an alarm one, and consumes 12V and 3A at maximum. Which would be the best way to control it (on/off) ? A power MOSFET, a triac maybe, a relay ? Thank you for your answers. Lucian -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics