The SA-361 Defender remote siren has been redesigned with a new look and added functionality! The improved Defender combines the same simple operation, reliable performance and full-featured siren options as the original SA-361, but in a smaller, more compact amplifier. Size and user-friendly serviceability were the motivating factors in the redevelopment of this industry favorite. These key factors were achieved through the addition of terminal block wiring, which offers simple, plug-in connection to the amplifier; and the reduction of the internal electronics footprint resulting in a smaller amplifier with more versatile installation capabilities. Compact 100-watt electronic siren amplifier. Wail, Yelp, Phaser, Manual and Air Horn tones. Twin rocker switch for tone control. Handsfree control. DIP Switch programmable. Internal diagnostic LED. 5 Year warranty as standard.