The AC DVM is a digital panel meter that reads AC voltage in the range of 60 to 500 VAC.
It is meant to snap into a rectangular cavity of 2.5 inches wide by 1.5 inches high.
The depth is about 3/4 inches. The supplied aux. power cable is about 7 inches long and plugs into the rear panel.
Note: LED segments are more red than they appear in this photo.