Siemens U-MH-1G - FireAlarms.tv - jjinc24/U8oL0's Fire Alarm Collection

Category : System Sensor

This is a Carbon Monoxide detector which can run off of a “normal” voltage of 12/24VDC.

Category : Wheelock

This is alarm is red and has a multi-candelas strobe.

Category : Gamewell

This is a somewhat obscure Gamewell alarm condition light, most likely used with system components such as duct detectors.