HK78A PRO – 4000 Counts TRMS Manual Range Digital Multimeter
Product Description
The Honeytek HK78A PRO is a high-accuracy, TRMS (True RMS) manual range digital multimeter designed for professional and industrial electrical testing. With up to 4000 counts display resolution, robust safety compliance, and a full range of measurement functions, it ensures reliable performance in demanding environments. Its compact and durable design makes it a trusted tool for electricians, technicians, and engineers.
Highlights
4000 counts TRMS manual range DMM with high measurement accuracy
CAT III 1000V / CAT II 1000V safety rating for secure testing
Comprehensive functions: DC/AC voltage, current, resistance, capacitance, frequency, temperature
Advanced features: NCV, live wire recognition, diode test, hFE transistor test, continuity buzzer, flashlight, data hold
Rugged design with backlit LCD for clear readings in any environment
Wide temperature and capacitance ranges for versatile applications
Specifications
| Specifications | Range | Accuracy |
|---|---|---|
| DC Voltage | 400mV/4V/40V/400V/1000V | ±(0.5%+2d) |
| AC Voltage | 4V/40V/400V/750V | ±(0.8%+3d) |
| DC Current | 40µA/400µA/4mA/40mA/400mA/20A | ±(1.0%+5d) |
| AC Current | 40mA/400mA/20A | ±(1.5%+5d) |
| Resistance | 400Ω/4kΩ/40kΩ/400kΩ/4MΩ/40MΩ | ±(0.8%+3d) to ±(1.0%+5d) |
| Capacitance | 10nF/100nF/1µF/10µF/100µF/1mF/40mF | ±(4.0%+25d) to ±(10%+5d) |
| Frequency | 1Hz/10Hz/100Hz/1kHz | ±(0.1%+2d) |
| Temperature (°C) | -20°C to 1000°C | ±(2.0%+3d) |
| Temperature (°F) | 0°F to 1832°F | ±(2.0%+3d) |
Express Functions
True RMS
Display Count: 4000
Diode Test & Continuity Buzzer
Transistor hFE test
NCV (Non-Contact Voltage)
Live Wire Recognition
LCD Backlight & Flashlight
Data Hold / Relative Mode
Auto Power Off
General Features
CAT Rating: CAT III 1000V
Battery: 2 × 1.5V (AA)
Display: 60.5 × 36.5 mm
Product Size: 185 × 88 × 54 mm
Weight: 355g
Packaging: 20pcs/CTN (46 × 31 × 34.5 cm, 12kg/13kg NW/GW)
Application
Electrical installation & troubleshooting (residential, commercial, industrial)
Solar PV system maintenance – measure DC/AC voltage, current, and temperature
R&D laboratories & workshops – precise resistance, capacitance, and frequency testing
HVAC systems – measure temperature and continuity
Field technicians – portable design with flashlight for onsite use
Comparison: HK78A PRO vs. HK78B PRO
| Feature | HK78A PRO | HK78B PRO |
|---|---|---|
| Display Count | 4000 | 4000 |
| Range Selection | Manual | Manual |
| DC Voltage | Up to 1000V | Up to 1000V |
| AC Voltage | Up to 750V | Up to 750V |
| DC Current | Up to 20A | Up to 20A |
| AC Current | Up to 20A | Up to 20A |
| Resistance | Up to 40MΩ | Up to 40MΩ |
| Capacitance | Up to 40mF | Up to 40mF |
| Frequency | 1kHz | 1kHz |
| Temperature Range | -20°C to 1000°C | -20°C to 1000°C |
| Extra Functions | TRMS, NCV, Live Wire Detection, Flashlight, hFE test | Same set of functions |
| Size/Weight | 185 × 88 × 54 mm, 355g | Same |
| Certifications | CAT III 1000V | CAT III 1000V |
Conclusion: Both models are nearly identical in functions and specs. The HK78A PRO offers the same professional-grade performance as HK78B PRO, with differences mainly in model designation and specific calibration design.
