Check the listing for details. 4-1/2 Digital Red LED 200A Current Meter. Condition: New. Listed at 13.50 USD. 4-1/2 Digital Red LED 200A Current Meter RED LED Current Meter Key Features of the 8145 Digital Current Meter High Precision and stableBright LED displayAuto "zero" when no inputLow power consumptionOver load display "EEEE" or "-EEE" Product Description This is a quality 4.5 digital Red LED meter. Note: An isolated power module is required if you wan to measure the current from a device that share the power with the meter. If not, it will cause common ground problems and may kill the meter. Do not rely on the cable color for connection as it changes sometimes. Follow the label on the meter only. *If you want to use it in a car, boar, or bike, you need to use a 5V regulator to step down 12V to 5V to power this meter. [-In+ -5+] **A pigtail is included. Specification Range: 0~+/- 199.99(with negative sign "-") Power: DC5V +/- 10%Current draw: