High Precision Pen Type Digital MultimeterVoltage tester accurately measures AC voltage: 2V~600V, DC voltage: 200mV~600V, 200~60M resistance tester, diode test and continuity alarm . Multifunction MultimeterHumanized design with 2000 counts, diode test, continuity, data hold, auto range check, auto power off and low battery indication, backlight and lamp function . Overrange indicationBracket support AP-38B pen type multimeter Double insulation (class II protection), 600V (CAT), This pen type digital multimeter is characterized by its size reduced, its portable and stable performance, a good tool for electrical tester and household electrical problems. Auto power off When the measurement exceeds 15 minutes without switching modes or pressing the key, the player goes into standby mode. Press any key to exit sleep mode. And you can also press 'SELECT' key. and hold to choose the resistance, diode or continuity test mode and AC/DC voltage of your choice.