Valcom V-9940 door intercom system

One-Way 1 Zone Extension Adaptor Interface Unit (No Dial Tone) Expandable Station Page Adapter use with Valcom multi-zone talkback and one-way page controls to provide page access with CO and Centrex Lines and PBX analog stations.

- Background Music Input With Mute.
- Requires -24 VDC, 200 mA.
- Multiple Units Can Be Installed In Tandem With Common All Call, Or Can Be Connected To Valcom Multi-Zone, One-Way or Talkback Page Control/Interfaces For Zone Paging And All Call.
- Provides Dry Contact Closure Output.
- 8 ohm And 600 ohm Outputs.
- U.L. Listed.