Product features: 1. Extremely fast measurement, intelligent identification 2.VFC inverter voltage: VFC function can be used to measure inverter output voltage 3. Actual measurement of object temperature: ambient temperature and object temperature dual screen display can be switched between and , with a free temperature probe 4. Non-contact zero-fire discrimination: weak signal is zero line, strong signal is fire line 5. Sound and light alarm with two-colour display 6. Direct test on power on: direct measurement of AC and DC voltage resistance, on and off without changing gears 7. Function introduction: AC voltage, DC voltage, beep on/off, AC current, DC current, resistance, capacitance, frequency, diode, breakpoint detection, ambient temperature, object temperature measurement, zero-fire line identification, VFC frequency voltage Product parameters: DC voltage: 0V~620V (DC mode) 0.8V~620V (Auto mode), resolution: 0.1V, accuracy: (0.8%+3) AC voltage: 0V~620V(AC mode)0.8V~620V(Auto mode), Resolution: 0.1V, Accuracy: (1.2%+5) Resistance: 0~6.000M, 6.000M~60.00M, Resolution: 0.1V, Accuracy: (1.2%+3) (2.0%+10) Capacitance: 0.5f~6000f, 6000F~60000f, Resolution: 0.001F, Accuracy: (3.5%+8) (4.5%+10) DC current: 1.0~610mA, Resolution: 0.1mA, Accuracy: (1.5%+3) AC current: 1.0-610mA (40~1000Hz), Resolution: 0.1mA, Accuracy: (1.5%+3) VFC voltage: 10V~620V, resolution: 1V, accuracy: (4.0%+3) Temperature K-type thermocouple: 0~50, 50~1000, Resolution: 1, Resolution: (1.5%+2) (2.0%+3) Frequency: 0Hz~9999Hz, Resolution: 0.001Hz, Resolution: (2.0%+10) Diode: less than 3.0V diode display forward voltage approximation NCV detection: Ambient temperature: Torch illumination: Firewire identification: Auto shut-off: 15 minutes On/off buzzer: less than 50, buzzer sounds and red backlight illuminates Maximum display: 6000 counts Batteries: 1.5V AAA*2 (shipped without batteries) Fuse: Current:630mA Size:5*20mm Size:140x54x33mm Package and list: Multimeter*1 Meter pen*1 Screwdriver*1 Temperature test stick*1 manual*1