DET4TC2: Dry-cell battery powered 4-terminal tester with selectable test frequencies, greater measurement sensitivity and attached rod technique and stakeless measurement capability
DET4TCR2: Rechargeable battery powered 4-terminal tester with selectable test frequencies, greater measurement sensitivity and attached rod technique and stakeless measurement capability
The DET4TD, DET4TC and DET4TCR replace the DET5/4R and DET5/4D.