Trumeter APM Voltage/Current/Frequency Panel Meters 4 Digit, Analog Bar Graph - Trumeter APM-AMP-APO, The Trumeter APM APM-AMP-APO programmable LCD panel ammeter features a 4-digit numeric display for precision and a 40 segment curved bargraph to show dynamic circuit conditions. Simply plug the meter into your PC via USB and use the free software to alter key parameters such as the scale of the bar graph, alarm set points and the background colour of the meter face. A 16 position switch on the rear panel allows selection between different parameter sets; 15 of the most common applications are factory programmed with position 16 reserved for your specific application if needed. Two programmable alarm set points can change the display to focus an operator's attention either by flashing, changing colour or changing the annunciator message. Alarms can be triggered if the monitored value exceeds, is lower than, is between or outside the set points. The LCD has a very wide viewing angle for