DCA-20PC - Subminiature DC Ammeters with LED Display and Built-In Shunts. The DCA-20PC Series are the first digital dc ammeters to include built-in shunts for measuring dc currents up to 20A. Six ranges provide for precision measurement of dc currents from 200uA to 20A. These ammeters are 100% self-contained; no calibration or user-supplied components are required. They even include terminal blocks for your external load circuit, a feature that enables simple 3-wire operation. Large, easy-to-read, LED display with 9.4mm high digits LED Colour is the Low-Power Red version Built-in shunts for digitally measuring dc currents from 200 A to 20A Functionally complete, no additional components required Wide power supply inputs with a range from 5 to 40Vdc (non-isolated) or 8-36Vdc (isolated) 20mV internal shunt minimizes power loss Includes load connections for easy 3 or 4-wire operation High resolution; Factory calibrated to ±0.1% accuracy Small package size: 35.1 x 22.4 x 26.4 mm