ATKINSON DYNAMICS AD-27AD - INTERCOM SLAVE - INTERCOM SLAVE CAST ALUMINUM WIDTH 6.7 IN HEIGHT 9.9 IN DEPTH 5.3 IN SIGNAL OUTPUT 100 DB 120VAC 0.24 AMPS AC 25 WATTS CORD 3 FT WALL MOUNTING ALUMINUM HOUSING MATERIAL NEMA 4X RATING OPERATING TEMP -31 TO 150 F GRAY COLOR UL CSA MARINE STANDARDS INCLUDES VOLUME CONTROL CALL BUTTON AND RUGGED CAST ALUMINUM NEMA 4X HOUSING POWER CORD - EQUAL TO 2GUC3