The DMS-20PC-4/20P-C is a 3-1/2-inch bright red loop-powered LED Process Monitor with positive reading, large, easy-to-read and LED display. The operating power is derived directly from the loop current itself - no external power supply is required. The large 0.37-inch digits exhibit uniform intensity over the entire 4 to 20mA operating range. Additionally, the total maximum loop voltage drop is only 5V. Users no longer have to settle for difficult-to-read LCD displays in loop-powered applications. The decimal-point and range-change selections are made on a six-position DIP switch featuring vibration-resistant gold-plated contacts. Unlike competitive meters, there are no jumpers or solder gaps to open or close. Connections to the current loop are made via a reliable, 2-position, screw-type terminal block. Its DIP switch and adjustment potentiometers accommodate hundreds of different input-current/output-reading combinations.