Digital Panel Meter Digital Input Range 100 to 500V AC Accuracy +/-1 Percent Display Span 9999 Display Digits 4 Red LED Display True RMS Yes No Excitation Use With 3-Phase Current Transformer Fits 1/4 DIN 96 x 96mm Opening Din Rail Process Connection No Power Required 40V-300V AC/V DC RS-485 Interface Output Modbus Communication Depth 2.44 in Mounting Clip Style Amik Includes Instructions Manufacturers Warranty Length 2 yr