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310-MV AudioMaster® Two-Way Intercom

  • Multi-voltage design accepts 24VDC and 120VAC/240VAC
  • Heavy-duty industrial intercom for indoor or outdoor applications
  • Balanced line output
  • Type 4X, IP56 enclosure
  • UL Listed, CSA Certified, and Marine Listed

Federal Signal's AudioMaster® 310-MV is an industrial intercom that provides reliable two-way communications and superior sound quality. This unit has a rugged Type 4X housing and is UL Listed and CSA Certified.

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

This heavy duty intercom will operate from -31ºF to 150ºF (-35ºC to 66ºC) in both indoor and outdoor applications. Remote device activation allows you to activate an auxiliary signal such as a horn or light.

The AudioMaster 310-MV requires 24VDC, 120VAC or 240VAC to power each unit. The intercom is easy to operate. Press the switch down to talk and release to listen.

The 310-MV 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 and efficient operation.


Part # Description Ship Weight Net Weight  
310-MV Intercom, 24VDC/120VAC/240VAC, industrial, wall mount 11.5 lbs. 9.9 lbs. Add to Quote >


Part # Description Ship Weight  
K8502017A Permanent Slave Kit   Add to Quote >

Replacement Parts

Description Part #  
PC Board Assembly K2001915B Add to Quote >
Connector, 10 Pin K140A326A-01 Add to Quote >
Resistor, 1K, 1W K101216A Add to Quote >
Fuse, 250V, 1/2 Amp K148A155A Add to Quote >
Fuse, 250V, 1 Amp K148A155A-01 Add to Quote >
Gasket, Rubber K8590013B Add to Quote >
Kit, Potentiometer K8590237A Add to Quote >
Kit, Toggle Switch K122A298A Add to Quote >
Kit, Call Button and Boot K8590241A Add to Quote >
Permanent Slave Kit K8502017A Add to Quote >


Listed By Underwriter's Laboratory (ULus)
Signal appliances, miscellaneous UEHX_E94581.pdf
Signal appliances, Marine UXPL_E12629.pdf
Certified by CSA International
Signal appliances, audible 4812_04_1401047.pdf





120VAC 50/60Hz

240VAC 50/60Hz

Mount Wall
Operating Current

260 mA at 24VDC

163 mA at 120VAC

82 mA at 240VAC

Operating Temperature Min. -31 F
Operating Temperature Max. 150 F
Standby Current

62 mA at 24VDC

70 mA at 120VAC

35 mA at 240VAC

Frequency Response 150Hz-12KHz
Input Impedance 3400 Ohms
Speaker Rating 30-Watts
Enclosure Rating Type 4X
Ingress Protection (IP) IP56
Height 9.88 IN
Width 6.5 IN
Depth 5 IN
Federal Signal distributed by Gross Automation - Brookfield, WI - Phone: (262) 252-1600 - Fax: (262) 252-1616
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