70 mm Stack Light, 0.5 in. NPT Base, Black Housing, 24V AC/DC, Steady LED Module, Level 1: Green, Steady LED Module, Level 2: Blue, Steady L ED Module, Level 3: Amber, Steady LED Module, Level 4: Red, One Circuit Sounder In Line, Level 5: None Sound Only, No Level 6 Module, No Le vel 6 Color, No Level 7 Module, No Level 7 Color, No Network Option