In summary, the DMS-20PC series combines a precision A/D converter; a factory-trimmed, highly stable, voltage reference; and a large, easy-to-read LED display in a single package that is only slightly larger than the display itself. Displays are available in red, orange, yellow, green or blue colors. These low-cost meters are fully self-contained and their silicone-encapsulation resists moisture and vibration. These meters are available in one of four differential input voltage ranges, are factory calibrated to ±1 count accuracy, and have a variety of potential applications.