XScorpion LED Digital Volt Meter, silver

SURFACE OR FLUSH MOUNT ALUMINUM FINISH HOUSING - Silver FACE
1-7/8&quote; DIAMETER HOLE x 5/8&quote; MOUNTING DEPTH (2-1/8&quote; x 1&quote; OVERALL)
2 WIRE POSITIVE OR NEGATIVE HOOK UP
AUTO SENSING TURN ON
3 DIGIT RED LED DISPLAY