...ding to IEC 61010-1), and do not use the K3HB-S, K3HB-V, K3HBH, K3HB-R, K3HB-P, K3HB-C, K3MA-J, K3MA-L, K3MA-F, or K3GN for measurements within Measurement Categories II, III, or IV (accordin...https://www.ia.omron.com/product/cautions/62/safety_precautions.html