1. 48*96mm size, 2. 4 digit display, 0-600V AC range 3. One Relay alarm output PMAC600E Digital Panel Meter with Following Features:1. Voltage / Ampere panel free setting by software2.With alarm output3. 4 LED display, range: -1999----+99994. Sampling rate: 4.5 times/second Ampere meter, Current Meter, Voltage Meter, Voltmeter