The DDK3 from Speco is a digital deterrent audio kit, includes PBM30, SPC15RP, SFR12 and PSW5. The PBM30 from Speco is UL listed contractorAlifiers are designed for long-running, everyday use. They can stand on their own to run a smaller installation, or be incorporated into a much larger job. With RMS power ranging from 30W to 120W, microphone and source-mixing ability, telephone paging interface and music-on-hold capability, there's practically no job where one of theseAlifiers wouldn’t be a perfect fit. The SPC15RP is a 5" x 8" 8 Ohm Weatherproof ABS PA Speaker Horn; the SFR12 is a Weather Resistant Strobe Flasher, Red. The PSW5 is a 1000mA (1A) 12VDC Power Supply.