Hioki DT4200 [DT4281] True-RMS Digital Multimeter, 1000V AC/DC, 60,000 Count, Advanced Electrical Testing. The Hioki DT4200 Digital Multimeter Series consist of a complete lineup of 9 models ranging from professional to industrial to pocket types. The DT4282 is a high-precision 60,000 count digital multimeter with direct 10A input and all of the functions and features required for advanced testing in laboratories and R&D.