+ 4 1/2 bit resolution (20000counts)
+ Data Logger + Multimeter + Thermometer (only for OW18E)
+ True RMS test supported
+ BLE 4.0 wireless transmission, more stable,less power consumption (only for OW18E)
+ Build-in offline record function (only for OW18E)
+ Chart and Diagram mode helps to analyze the data tendency (only for OW18E)
+ Flashlight function lightens the darkness
+ Support NCV non-contact voltage sense
+ Widely supported on Android, iOS,windows (only for OW18E)