Smart Pen Type Digital Multimeter Auto Range 4000 Counts True RMS DC AC Voltage Tester NCV 3-Phase Rotation Detector Multimeter Descriptions: HT122 digital pen type multimeter, has a sampling speed of 3 times per second and high precision measurement. It has LCD clear screen, easy to read the measured values, flashlight available for darkness. It is designed with light weight and easy-to-carry pocket size, comfort to grip. Product Features: 1, Auto power off 2, Data hold 3, Flashlight 4, Low battery indication 5, Gear selection 6, DC AC Voltage measurement 7, Frequency measurement 8, Capacitance measurement 9, Continuity measurement 10,Diode measurement 11,Live wire detecting 12,Non-contact Phase sequence detection 13,NCV measurement Product Details: 1, Environment condition of use: CAT. III 600V;Pollution level2, Altitude 28°C& 65289; 5, MAX. Voltage between terminals and earth ground: 600V 6, Sampling rate: approx. 3 times/second. 7,Display: 4000 counts 8, Over range indication: ''OL''. 9, Low battery indication: yes 10,Input polarity indication: yes 11,Power supply: 2 x 1.5V AAA batteries(not include) 12,DC voltage: 4V, 40V, 400V, 600V, ±(0.5% +3) 13,AC voltage :4V, 40V, 400V, 600V, ±(0.8%+3) 14,Resistance:4000Ω,40KΩ,400KΩ,4MΩ,±(1.0%+5);40MΩ,±(1.5%+10) 15,Capacitance: 40nF, 400nF,4uF, 40uF,400uF, 4mF; ±(3.0+5) 16,Frequency: 40Hz, 400Hz, 4KHz, 40kHz, 400kHz, 4MHZ, ±(1.