Bogen’s DC Power Supplies are designed to supply power to battery-operated, other low voltage DC equipment, or 24V DC equipment from a 120V AC source. They are rugged, versatile, and dependable, making them suitable for many types of telephone paging equipment, amplified speakers and horns, tone generators, and intercom systems. 12V, 24V, and 48V models available. PRSLSI additionally provides talk battery for loop start trunks and a buffered audio output to drive up to 25 self-amplified speaker inputs.120V AC, 60 Hz, 8W 12V DC, 300 mA Unregulated Plug-In Barrel Connector**. 1 lb. UL listed