- 3 Zone one-way page control- Provides tandem all call- Background music input automatically mutes in zonebeing paged- Page override for special priority announcements- Features are programmable per zone- Built-in tone generator for night ringing time clock tone doorbell- Accepts pulse and tone dial- Battery back-up input - UL listed- To interface with analog extension or Centrexline add the VC-V-9970- Access: page port on selected telephone systems PBX loop start or ground-start trunk port electronic or 1A2 line key (line card required) or dedicated single line phoneset- Input impedance: 600 ohm- Music sourceimpedance: 4 to 600 ohm- Music input level: -10dBm nominal- DC output: -24 Vdc @ 500 mA- Power requirements: 230 Vac/.5A or 120 Vac/1A- Weight: 6.25lbs- Dimensions: 7.1"H x 10"W x 3"D- VALCOM POWER UNITS (+20)VCV2003A