DET4 series four-terminal earth/ground resistance testers

Megger’s DET4 series measures earth/ground resistance and soil resistivity
The DET4 series supports two-, three- and four-terminal testing, Attached Rod Technique (ART), stakeless, leakage current, and earth noise voltage measurement.
Stakeless or clamp-on testing capability
Attached Rod Technique (ART) capability
Multiple, user-selectable test frequencies
Resistance measurement range to 200 kilohms