SA-380 Rugged 100 watt electronic siren amp with dip switch options including the selection of desired siren tones. Reliable four position rotary switch features Wail, Yelp and Phaser siren tones with optional Two-Tone/HiLo sound and push button override for Manual and Air Horn. Pa has noise canceling mic. Hands free Horn Ring Cycler 2 No hassle 5 year limited warranty. Size 6"W x 2"H x 6"D