Powerful yet lightweight Federal Signal Voice Guns®. Electronic megaphones with special noise concealing microphone improves voice reproduction.

Manufactured with rugged, high-impact CycolacTM parts for long service life. Ideal for industry, fire, marine, athletics, law enforcement and many other applications.

Model HM738 is made of LexanTM high-impact, self-extinguishing plastic. This benefit makes it appropriate for hazardous environments such as oil refineries and other industries where fire hazard is always present. The HM738 operates on eight “AA” batteries (Not included).

Model HM739 is a compact and effective transistorized megaphone. A maximum of 10 watts of output provides up to 800 feet to coverage. Includes volume control, pistol grip with trigger switch and operates on six “C” size batteries (Not included).

Model       Power
No.           Output              Range
HM738    16 W peak       1/4 Mile
HM739    10 W peak       800 feet