Honeywell AT140A1000 40Va, 120V Transformer - 60 Hz. Foot mounted, plate mounted, clamp mounted or panel mounted 120 Vac Transformer with Metal end bells Color-coded leadwires for primary connections and screw terminals for secondary connections, fixed 1/4 inch (6 mm) male quick-connects or color-coded leadwires for both primary and secondary, are standard Meet Underwriters Laboratories Inc. Standard UL 1585 and are identified. Class 2 not wet, Class 3 wet Meet NEC Class 2 requirements Foot mounted, plate mounted on 2x4 in. or 4x4 in. outlet box, clamp mounted using outlet box knockout, or panel mounted