Premier Pocket DMM with CAT IV 300V/ CAT III 600V Safety
DIGITAL MULTIMETER DT4221
Description
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.
Key Features
• Achieving a high level of safety in a compact body and lightweight design
• No resistance measurement and diode testing for more safety
• Voltage detection function
• 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
CAT IV 300 V, CAT III 600 V
Video on how to use digital multimeters
This video introduces how to use the DT4200 series of digital testers as well as some of the instrument’s featured functionality. Hioki testers are engineered to help professional electricians do their jobs safely and quickly.
Compact and safety-designed digital multimeter for voltage measurement
・Voltage detection function
Compact and lightweight design for outstanding ease of use
The small form factor fits in your hand perfectly and is easily stowable, making it convenient to transport to and from the field and boosting work efficiency.
Use Single AAA alkaline battery only
Since the DT4221 only uses a single AAA alkaline battery that can be easily replaced, there’s no need to carry a large number of spare batteries with you.
Rear probe connections for superior screen visibility and easy storage
Since this design keeps cords from covering up the screen during measurement, you can read values at a glance. After use, probes can be stored on the rear of the instrument, facilitating a smooth start to the next measurement job.
Measure output voltage on the secondary sides of inverters by eliminating harmonic components
Accurately measure the fundamental wave alone by eliminating harmonic components with the DMM’s low-pass filter function.
True RMS measurement for accurate measurement of even distorted current waveforms
Digital multimeters implement two types of measurement: mean-value measurement and true RMS measurement. The two methods yield significantly different measurement results for current waveforms, which are often distorted. For accurate measurement, it is necessary to use an instrument with true RMS capability.
Designed and manufactured in Japan to ensure high quality and guaranteed with a 3-year warranty for peace of mind
All development, design, and manufacturing processes for almost all Hioki digital multimeters are carried out at our Head Office in Nagano Prefecture. Some of the industry’s most advanced technological capabilities enable us to deliver products of the highest possible quality.
Safe measurement requires use of an instrument that suits the measurement location.
To ensure operators’ ability to use measuring instruments safely, IEC 61010 classifies the locations in which instruments are used into a series of safety-based measurement categories (ranging from CAT II to CAT IV). Using an instrument that does not satisfy the required safety level can lead to an electrical accident. Despite a compact body, the DT4221 can be used to measure voltage at distribution panels.
Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)Regarding DMM Accuracy Due to the many ranges and functions available in a DMM, only the basic accuracy is indicated for reference. Please refer to the individual catalogs for detailed accuracy information.
| 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 Ω or less (buzzer sound), [OFF]: 245 Ω 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 |
Catalogs
DIGITAL MULTIMETER DT4200 Series 
User Guides
DMM series selection guide
Manuals
DIGITAL MULTIMETER DT4221,DT4222,DT4223,DT4224 [3MB]
DIGITAL MULTIMETER DT4221,DT4222,DT4223,DT4224 [3MB]
DIGITAL MULTIMETER DT4221,DT4222,DT4223,DT4224 [11MB]
DIGITAL MULTIMETER DT4221,DT4222,DT4223,DT4224 [7MB]
Technical Notes
Digital Multimeter IC HAZ01
Declaration of Conformity
DIGITAL MULTIMETER DT4221,DT4222,DT4223,DT4224 [100KB]
Options
Input cable options
Test Pin Set L4932 is required when using the Small Alligator Clip Set L4934.
SMALL ALLIGATOR CLIP SET L4934
Attaches to the tip of the L4932, L9207-10/DT4911, L9206, CAT III 300V, CAT II 600V
Other options
MAGNETIC STRAP Z5004
MAGNETIC STRAP Z5020
Extra strength
CARRYING CASE C0200
Test leads
Options for the L9207-10 (L9207-10 is a bundled accessory)
TEST LEAD DT4911
CAT IV 300V, CAT III 600V, 54cm (1.77ft) length
Test leads A
Options for the L9207-10
CONTACT PIN SET L4933
Attaches to the tip of the Test Lead L9207-10/DT4911, L9206, 70V DC/ 33V AC
There are no drivers, firmware or software available for this product.
Related products
-
- 4199 count Average rectified CAT III 600 V Ultra bright LED light at probe tip
Pencil-style Pocket Digital Multimeter for General Electrical Maintenance, Testing and Hobbyists
-
- 6000 count Circuit breaker false trip prevention built-in Low-pass filter No current measurements Capacitance and diode testing True RMS CAT III 600 V
Pocket DMM that Prevents False Circuit Breaker Trips using Proprietary Technology
-
- 4199 count Average rectified CAT III 600 V Solar-powered card-sized DMM
Hybrid Solar-Powered Digital Multimeter for General Electrical Maintenance and Testing
-
- 4199 count display Average rectified CAT III 300 V, CAT II 600 V Card-sized
Card-style Pocket Digital Multimeter for General Electrical Maintenance and Testing