Analog Railroad Tester Basic AC Current Accuracy +/-1.50 Percent Resistance Measurement Accuracy +/-2.00 Percent Basic DC Current Accuracy +/-1.50 Percent AC Frequency Response 25 to 400 Hz Parameters Measured AC Current AC Voltage DC Current DC Voltage Resistance Basic AC Voltage Accuracy +/-3.00 Percent Basic DC Voltage Accuracy +/-1.50 Percent Minimum AC Voltage Measurement 1.5 V Maximum AC Voltage Measurement 600 V Minimum DC Voltage Measurement 0.6 V