PROCESS DISPLAY MONITOR 4 to 20mA 3.1/2-DIGIT; No. of Digits / Alpha:3-1/2; Meter Function:Current Loop Indicator; Meter Range:4mA to 20mA; Digit Height:10.2mm; Panel Cutout Height:21.29mm; Panel Cutout Width:33.93mm ;RoHS Compliant: Yes