Convert any Fieldpiece accessory head instrument into a standalone with the Electronic Handle model EHDL1. It features a MAX/MIN button to record the highest and lowest reading. And a HOLD button to hold the reading. The EHDL1 has a 200 and 2000 mVAC for use with our Amp Clamp, model ACH4 and the 200 and 2000mVDC range is for use with the rest of our accessory head instruments.