The DV4 operates on 16VAC (40VA) low-voltage Class II wiring. Each DV4 requires a separate Model T1640 (U.L. Listed) plug-in transformer. Do not power from the same transformer that is providing power for the intercom amplifier.
These DV4 paging adapters are designed to easily surface mount right onto the finished wall by means of customer supplied screws or the convenient plastic 'Din Rail' bracket supplied with each unit. Connections are positive screw terminal type. The DV4 must be used in addition to the NH908A or NH208TVU intercom amplifier.
||Height: 2.375" (61mm) Width: 4.25" (108mm) Depth: 4.75" (121mm) from mounting surface Volume
||Adjustable potentiometer built-in.
||Positive screw terminal connectors.|