Easy and safety for low Voltage Tester,home,cars or high Voltage Tester. ·The unit is a reliable and safe 4-in ... -1 automatic voltage tester up to 690 V, a resistance tester, a ... .LCD DisplaySpecificationsVoltage range:6- 690 Volt AC/DCLED resolution:bargraph, 8.0 - 15.0V, res = 0,1V 151 - 690V, res = ... :< 200 k Ohm Frequency:0 ~ 65 Hz Backlight: Including Voltage Tester