How do I wire a three-terminal piezo buzzer to make it sound? Answered
I salvaged a piezo sounder from a CO detector. The sounder (EFM-290ED rated at 9V) has 3 pins rather than the two I am more familiar with. The pins are labled G, F, and M. I have tired applying 9V across all combinations of the pins but haven't had any luck maiking it sound.