Hioki DT4200 [DT4222] True-RMS Pocket-Sized Digital Multimeter, 600V AC/DC with Capacitance & Resistance. The Hioki DT4200 Digital Multimeter Series consist of a complete lineup of 9 models ranging from professional to industrial to pocket meters, delivering a super fast response rate and safety features that take electrical testing to a higher level. The DT4222 is a pocket-sized digital multimeter designed specifically for general purpose testing, with ±0.5% DC V accuracy and wide 40 Hz to 1 kHz AC V bandwidth.