HIOKI DIGITAL MULTIMETER DT4281, World's Premier Digital Multimeter. Superior Accuracy and High Response, Topped with Safety Terminal Shutters
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Product Description
The DT4281 is our top-of-the-line high-precision 60000 count digital multimeter with all of the functions and features required for advanced testing in complex power and electrical applications.
- 60000 count, 5-digit display, high-resolution measurements
- ±0.025% DC V basic accuracy, wide 20 Hz to 100 kHz AC V frequency characteristics
- Low-pass filter cuts high harmonics (when measuring inverter fundamental waveforms)
- Measures large currents with optional clamp probe (only for DT4281, which has no 10 A terminal for accident prevention)
- Terminal shutter mechanism (prevents erroneous test lead insertion)
- Dual display lets you check voltage and frequency simultaneously


Basic specifications
- DC Voltage range: 60.000 mV to 1000.0 V, 6 ranges, Basic accuracy: ±0.025 % rdg. ±2 dgt.
- AC Voltage range: 60.000 mV to 1000.0 V, 6 ranges, Frequency characteristics: 20 Hz - 100 kHz / Basic accuracy 45 - 65 Hz : ±0.2 % rdg. ±25 dgt. (True RMS, crest factor 3)
- DC + AC Voltage range: 6.0000 V to 1000.0 V, 4 ranges, Frequency characteristics: 20 Hz - 100 kHz / Basic accuracy 45 - 65 Hz : ±0.3 % rdg. ±30 dgt. (True RMS, crest factor 3)
- Resistance range: 60.000 Ω to 600.0 MΩ, 8 ranges, Basic accuracy: ±0.03 % rdg. ±2 dgt.
- DC Current range: 600.00 μA to 600.00 mA, 4 ranges / Basic accuracy: ±0.05 % rdg. ±5 dgt.
- AC Current range: 600.00 μA to 600.00 mA, 4 ranges / Basic accuracy 45 - 65 Hz : ±0.6 % rdg. ±5 dgt. (True RMS, crest factor 3) / Frequency characteristics: 20 Hz - 20 kHz (at 600 μA to 600 mA range)
- AC Current range (use with Clamp on probes): 10.00 A to 1000 A, 7 ranges / Add the Clamp on probe accuracy to Basic accuracy 40 - 65 Hz : ±0.6 % rdg. ±2 dgt. (True RMS, crest factor 3)
- Peak: DC V measurement: Signal width 4 msec or more (single), 1 msec or more (repeated) / AC V, DC/AC A measurement: / Signal width 1 msec or more (single), 250 μsec or more (repeated)
- Capacitance range: 1.000 nF to 100.0 mF, 9 ranges, Basic accuracy: ±1.0 % rdg. ±5 dgt.
- Continuity Check: Continuity threshold: 20/50/100/500 Ω, Response time: 10 ms or more
- Diode test: Open terminal voltage: 4.5 V or less, Testing current 1.2 mA or less, Threshold of forward voltage: 0.15 V to 3 V, seven stages
- Frequency range: AC V, DC+AC V, AC A measurement, at pulse width 1 μs or more (50 % duty ratio) / 99.999 Hz (0.5 Hz or more) to 500.00 kHz, 5 ranges, ±0.005 % rdg. ±3 dgt.
- dB conversion: Standard impedance setting (dBm), 4 Ω to 1200 Ω, 20 stages / Display dB conversion value of AC voltage (dBV)
- Temperature (thermocouples): K: -40.0 °C to 800.0 °C (-40.0 °F to 1472.0 °F) / Add accuracy of the Thermocouple probe to main unit accuracy: ±0.5 % rdg. ±3 °C
- Other functions: Filter function (remove harmonic noise, use only at 600 V AC, 1000 V AC ranges), display value hold, auto hold, MAX/MIN value display, PEAK value display, relative value display, sampling setting, internal memory (400 data), auto-power save, USB communication (option), mis-insertion prevention shutters, decibel conversion, 4-20 mA percentage conversion
- Display: Main and sub displays: 5-digits LCD, max. 60000 digits
- Display refresh rates: 5 times/s (Capacitance measurement: 0.05 to 2 times/s, depending on measured value, Temperature: 1 time/s )
- Power supply: LR6 (AA) alkaline batteries × 4, Continuous use: 100 hours
- Dimensions and mass: 93 mm (3.66 in) W × 197 mm (7.76 in) H× 53 mm (2.09 in) D, 650 g (22.9 oz) (with test leads holder and batteries)
- Included accessories: Test Lead L9207-10 × 1, Instruction Manual × 1, LR6 Alkaline Battery × 4

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