This product is No Longer Available.
The Nutone NA300MCWH volume control has been discontinued. An exact replacement is the M&S MVC1 volume control.
The Nutone Volume Control is designed to be used with 45-ohm intercom ceiling or wall speakers. This volume control is used with the NM100 and NM200 series intercom systems. The NA300MCWH volume control is used to control music volume through one or two ceiling speakers. It mounts in a single-gang J-box (not included). The single knob is mounted on a wall plate. The volume control enables the consumer to regulate the volume separate from the master station.