UT210D/UT210E is a mini 200A/100A UT210E only true RMS digital clamp meter with auto ranging and 2000 display counts, it is a portable and multifunctional device. It can measure AC voltage and AC current with frequency conversion noise, and realize non-contact voltage detection, i.e. NCV function, through the sensor on the top of the clamp head. NCV Test: It with non-contact measurement of electric field. If you want to measure whether there is AC voltage or electromagnetic field, you can choose the range. Double Injection Knob: Double injection molding rotation, break wall, gear selection, easy to operate.