Page Control - 1 Zone 1Way- 1 Zone one-way page control- Background music input with voice operated mute- Page override for special priority announcements- Battery back-up input - Built-in power - UL listed- Access: page port, PBX loop-start trunk port, electronic or 1A2 line key (line card required), or dedicated singleline phone set- Input impedance: 600 ohm- Music source impedance: 4 to 600 ohm- Music input level: -10dBm nominal- DC output: -24 Vdc @ 600 mA- Power requirements: 120 Vac/1A- Weight: 3.4lbs- Dimensions: 2.6"H x 7.75"W x 5.8"D- VALCOM POWER UNITS (+12)VCV2000A