HEAT INSULATION Sanwa DG34 Hybrid Insulation Resistance Testers Hybrid pocket size Insullation Tester + Clamp meter Features:  Lightweight approx. 160g Easy to use, pocket size ACV / DCV measurement range DCA / ACA measurement range Inorganic EL backlight Test leads holder with thermo plastic elastomer which is easy to reel Current measurement with thin U-shaped current sensor ( 7mm) at angles of 0 and 180 degrees Data hold Measurement of relative value With Clip adapter Display : 3999 Sampling rate : 2 times / sec