HUDSONVILLE, MI - SoundOff Signal recently released the 100D Series Professional Speaker.

The new product has undergone a series of grueling tests including testing for Dust, High & Low Temperature, Water, Salt, and Vibration so you can be sure this rugged speaker will stand up to all kinds of environmental conditions.

This product was specifically designed for narrow and small spaces.  A super clear voice and sound system makes this speaker a great addition to your emergency, fire & rescue vehicles. It meets SAE J1849 certification and is CA Title 13 Compliant. For more details please visit or call (800) 338.7337.