DT4221 – Digital Multimeter


  • Premier Pocket DMM with CAT IV 300V/ CAT III 600V Safety


DT4221 – Digital Multimeter


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 DT4221 is a pocket-sized digital multimeter designed specifically for electrical work requiring optimal safety, with ?0.5% DC V accuracy and wide 40Hz to 1kHz AC V bandwidth.

CAT IV 300 V, CAT III 600 V

Key Features

  • Achieving a high level of safety in a compact body and lightweight design
  • No resistance measurement and diode testing for more safety (DT4221)
  • Voltage detection function (DT4221)
  • Robust design capable of withstanding a drop from a height of 1 m
  • Test leads conveniently wrap around the back
  • ?0.5% DC V basic accuracy, wide 40 Hz to 1 kHz AC V frequency characteristics
  • Low-pass filter cuts high harmonics (when measuring inverter fundamental waveforms)
  • Broad -10 (14?F) to 50?C (122?F) operating temperature range
  • Display backlight

Technical Specifications

Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)
DC voltage 600.0 mV to 600.0 V, 4 ranges, Basic accuracy: ?0.5 % rdg. ?5 dgt.
AC voltage 6.000 V to 600.0 V, 3 ranges, Frequency characteristics: 40 Hz – 1 kHz, Basic accuracy 40 – 500 Hz : ?1.0 % rdg. ?3 dgt. (True RMS, crest factor 3)
Resistance N/A
C (capacitance) 1.000 nF to 100.0 mF, 9 ranges, Basic accuracy: ?1.0 % rdg. ?5 dgt.
Frequency AC V measurement: 99.99 Hz (5 Hz or more) to 9.999 kHz, 3 ranges, Basic accuracy: ?0.1 % rdg. ?2 dgt.
Continuity check Continuity threshold [ON]: 25 ? or less (buzzer sound), [OFF]: 245 ? or more. Response time: 0.5 ms or more
Diode test Open terminal voltage: 2.5 V or less, Testing current 0.5 mA or less, Threshold of forward voltage: 0.15 V to 1.5 V
Voltage detection 80 V to 600 V AC
Other functions Filter function, Display value hold, Relative display, Auto-power save
Display Main and sub displays: 4-digits LCD, max. 6000 digits, bar graph
Display refresh rates 5 times/s (Capacitance measurement: 0.05 to 5 times/s, depending on measured value, Frequency: 1 to 2 time/s )
Power supply LR03 alkaline batteries _1, Continuous use: 40 hours (back light OFF)
Dimensions and mass 72 mm (2.83 in) W _ 149 mm (5.87 in) H_ 38 mm (1.50 in) D,190 g (6.7 oz) (with batteries and holster)
Accessories Test Lead DT4911 _1, Holster _1, Instruction manual _1, LR03 alkaline battery _1