XScorpion DVM3RS LED Digital Voltmeter

Xscorpion Led Digital Voltmeter, Silver

Surface Or Flush Mount Aluminum Finish Housing Black Face
1 7/8 Diameter Hole X 5/8 Mounting Depth (2 1/8 X 1 Overall)
2 Wire Positive Or Negative Hook Up
Auto Sensing Turn On
3 Digit Red Led Display