A very simple way to add an alarm to a circuit on your boat. Panel-mounted buzzer has a bright red light which sounds and lights when voltage is present.

Works with oil pressure, temperature, halon extinguishers, etc
Use with grounded or ungrounded switches
For use with Marine Engine Warning Alarm Kit
Fits panels up to 1/4" thick
Comparable to Cole Hersee # 4112-RC-BP
1.25"H x 1.81"W x 3.31"L
Weight - 3.46 OZ