SelecTone Amplifed Speaker 120VAC - Available in 24VAC/DC, 120VAC and 240VAC. Built-in gain control, adjustable between 0 dBa to 114 dBa at 10 feet (100 dBa to 124 dBa at 1 meter). Type 3R, IP54 enclosure. Digital signal amplification. Fused input and output. Indoor/outdoor use. UL 1480 and CSFM Approved. UL and cUL Listed.