HYAMP III features two models. The 3130 is a 30 Amp Ground Bond tester and the 3160 is a 60 Amp Ground Bond tester. Both models feature an enhanced graphic LCD and simplified user-interface. Both models can be used stand alone or interconnected to Associated Research's Hypot III family of mid-range Hipot testers to form a complete test system. These instruments provide advanced features and technology for a mid-range Ground Bond tester. Features include: CAL-ALERT®, Automatic Calibration Alert System; VERI-CHEK®, Built-in Self Verification System; 10 Memories with 3 Steps per Memory; Enhanced PLC Remote Control; and 4-Wire Measurement and Milliohm Offset.