Designed for single-channel, two-way indoor and outdoor communication applications, the Hazardous Location Wall-Mount Intercoms are rated for Class I, Division 2, Groups A, B, C, & D; Class II, Division 2, Groups F & G; and Class III. Features include integrated volume control, Talk/Listen switch, corrosion resistant cast aluminum housing with rugged powder coat finish (Type 4X, IP65 enclosure), reliable 25-watt speaker and balanced line output. These heavy-duty units are UL and cUL Listed, CSA Certified and Marine rated and are designed for multi-voltage operation: 24VDC, 120VAC and 240 VAC, 50/60Hz.


Watts 30
Operating Temperature Range -31˚F to 150˚F (-50˚C to 66˚C)
Net Weight 9.0 lbs (4.08 kg)
Ship Weight 11 lbs (4.99 kg)
Dim. (H X W X D) 9.88 in (251.0 mm) x 6.50 in (165.1 mm) x 5.03 in ( 127.0 mm)

Ordering Information

Model Types
Model Description UPC
AD-28X-MV Intercom, 24VDC-120VAC, T/L switch, volume control, hazardous location 782979213949
Replacement Parts
Description Part Number UPC
PCBA, 310X-MV K2001915C-02 782979129080
Connector, 10 position K140A326A-01 782979122579
Kit, potentiometer, 10K K8590237A 782979120612
Switch, toggle K122A298A 782979102540
Kit, switch, push button K8590241A 782979120650
Resistor, 1K, 1W, 1%, 310-MV K101216A 782979113065
Gasket, cover, 310X-MV K8590013B-01 782979129677