UNI T True RMS Digital Multimeter 6000Counts Auto/ Manual Range AC/DC Tester UNI T True RMS Digital Multimeter UT15B /UT17B PRO 6000Counts Auto/ Manual Range AC/DC 1000V/10A Resistance Frequency Diode Frequency Diode Temperature VFC Tester Backlight Data hold Flashlight UT15B PRO / UT17B PRO is a high-reliability true RMS digital multimeter.The product has a built-in VFC anti-jamming start mode, which can filter out the carrier frequency interference or distortion voltage signal superimposed by the sine wave, and stably measure the output voltage of the inverter. And equipped with a hand-automatic backlight induction self-starting function. UT17B PRO has added frequency and duty cycle modes, which can switch frequency and duty measurement arbitrarily between DC / AC. It is also equipped with a temperature measurement function with a resolution of 0.1 The full range of functions of this series of products realizes the misdetection protection of up to 30KVA energy, ensuring users are safer and more reliable in operation,and obtained CETLus certification according to the CAT III 1000V / CAT IV 600V safety level. Features 1.6000 display digits / true effective value measurement range is wider 2. Large screen LCD display, easy to read data; 3.1000V AC / DC voltage measurement 4. VFC frequency conversion voltage measurement 600V (low pass) strong anti-interference; 5.LED flashlight, automatic induction backlight, to deal with dark environment 6.60M resistance measurement / 6000uF capacitance measurement 7.100kHz frequency / duty cycle (UT17B PRO only) 8. Temperature measurement (UT17B PRO only) 9. Diode / on / off beep 10. Manual / automatic range 11. Max / Min / Relative 12. Current gear protection: equipped with fused fuse 440mA / 11A 1000V fuse 13. Dangerous voltage warning function, easier to use 14. CAT III1000V / CAT IV600V safety level double insulation design.