Federal Signal’s AudioMaster® 310-MV-MNC is a two-way industrial intercom that provides reliable communications and superior sound quality.

The AudioMaster 310-MV-MNC’s standard features include volume control, call button, balanced line output, listen/talk switch, remote device activation, and the ability to power another intercom at 24VDC.

This heavy duty intercom will operate from -31°F to 150°F (-35°C to 66°C). The remote device activation feature allows you to activate an auxiliary signal such as a horn or light.

When the ambient noise level is too high for the standard 310-MV integrated microphone, the 310-MV-MNC noise canceling unit is used to improve transmission quality.

The 310-MV-MNC is ideal for use at oil refineries, petrochemical plants, offshore platforms, pulp and paper mills, water treatment facilities, airports, shipyards or anywhere reliable two-way communication is important for safe, efficient operation.


Voltage 24VDC
120VAC 50/60Hz
240VAC 50/60Hz
Mount Wall
Operating Current 260 mA at 24VDC
163 mA at 120VAC
82 mA at 240VAC
Standby Current 62 mA at 24VDC
70 mA at 120VAC
35 mA at 240VAC
Enclosure Rating Type 3R
Frequency Response 150Hz-12KHz
Input Impedance 3400 Ohms
Speaker Rating 30–Watts
Operating Temperature Minimum -31 °F
Operating Temperature Maximum 150 °F
Height 9.880 in
Width 6.500 in
Depth 5.000 in
Net Weight 10.10 lb
Shipping Weight 12 lb


Product Literature

Ordering Information

Model Types
Model Description UPC
310-MV-MNC Intercom, 24VDC/120VAC/240VAC, industrial, wall mount, microphone 78297920401
Replacement Parts
Description Part Number UPC
PCBA, 310-MV K2001915C 782979380665
Connector, 10 position K140A326A-01 782979285007
Kit, potentiometer, 10K K8590237A 782979205913
Switch, toggle K122A298A 782979232445
Kit, switch, push button K8590241A 782979205937
Resistor, 1K, 1W, 1%, 310-MV K101216A 782979219170
Gasket, cover plate K8590013B 782979205821