Product Description
The Honeytek HK221F Mini Compact TRMS Clamp Meter is a professional-grade portable clamp meter designed for modern electrical diagnostics. Built for technicians working in automotive systems, solar power installations, industrial automation, and HVAC/R maintenance, the HK221F combines AC/DC current clamping, True RMS accuracy, and multi-function testing in a compact handheld design.
Unlike standard mini clamp meters, the HK221F supports both AC and DC current measurement up to 200A, making it ideal for battery systems, photovoltaic (PV) installations, inverter systems, and DC-powered industrial controls. It also integrates temperature measurement, capacitance, frequency testing up to 10MHz, NCV detection, and live wire recognition, delivering an all-in-one diagnostic solution for professionals.
With its CAT III 600V safety rating, lightweight structure, and portable form factor, the HK221F is an excellent choice for electricians, solar technicians, automotive engineers, and field service professionals.
Features
The HK221F supports both AC and DC current clamping, allowing technicians to safely measure current without disconnecting circuits. This makes it especially useful for:
- Automotive battery systems
- Solar PV installations
- DC inverter systems
- Industrial automation equipment
- Electric vehicle diagnostics
True RMS Measurement
True RMS technology ensures highly accurate readings when measuring non-linear electrical loads commonly found in:
- Variable Frequency Drives (VFDs)
- Inverter air conditioners
- Solar inverters
- Industrial control systems
Compact Mini Clamp Meter Design
Despite its professional functionality, the HK221F maintains a lightweight and portable design:
- Weight: only 165g
- Compact body for one-hand operation
- Easy to carry in tool bags or pockets
- Ideal for field technicians and mobile service engineers
Multi-Function Electrical Testing
The HK221F combines multiple testing capabilities into one device:
- AC/DC Voltage
- AC/DC Current
- Resistance
- Capacitance
- Frequency
- Temperature
- NCV Detection
- Live Wire Recognition
Enhanced Safety Protection
Designed with technician safety in mind, the HK221F includes:
- CAT III 600V safety rating
- Non-contact voltage detection (NCV)
- Live wire identification
- Overload protection
- Durable insulated clamp structure
Specifications
| Category | Function | Range | Accuracy |
|---|---|---|---|
| Electrical | DC Voltage | 400mV / 4V / 40V / 400V / 600V | ±(0.7%+5d) / ±(0.8%+5d) |
| Electrical | AC Voltage (True RMS) | 4V / 40V / 400V / 600V | ±(1.0%+5d) |
| Electrical | Special AC Voltage Range | 40V / 200V | ±(2.5%+10d) |
| Electrical | DC Current | 40A / 200A | ±(1.5% + 10 digits) |
| Electrical | AC Current (True RMS) | 40A / 200A | ±(2.5% + 10 digits) |
| Electrical | Resistance | 400Ω to 40MΩ | ±(0.8%+5d) to ±(2.0%+10d) |
| Electrical | Capacitance | 40nF to 4mF | ±(4.0%+25d) to ±(10%+5d) |
| Electrical | Frequency | 10Hz ~ 10MHz | ±(0.5% + 2 digits) |
| Specialized | Temperature | -20°C to 1000°C / -4°F to 1832°F | ±2°C to ±5°F |
| General | Display | 3999 Counts | — |
| General | Safety Rating | CAT III 600V | — |
| General | Jaw Size | Φ17mm × 27mm | — |
| General | Power Supply | 2 × 1.5V AAA Batteries | — |
| General | Dimensions | 178 × 60 × 32 mm | — |
| General | Weight | 165g | — |
Applications
The HK221F is ideal for diagnosing automotive electrical systems, including:
- Battery drain testing
- Alternator output testing
- Starter motor current analysis
- Electric vehicle maintenance
Solar Power & Renewable Energy Systems
Perfect for photovoltaic system installation and maintenance:
- Measuring DC current from solar panels
- Testing charge controllers
- Monitoring inverter performance
- Troubleshooting PV arrays
Industrial Automation & Control Systems
Suitable for industrial electrical maintenance:
- PLC systems
- Robotics
- VFD drives
- DC-powered industrial controls
HVAC/R Service Applications
Useful for modern HVAC systems using inverter technology:
- DC compressor systems
- Smart HVAC controllers
- Frequency inverter diagnostics
- Temperature monitoring
HK221D vs HK221F Clamp Meter Comparison
| Feature | HK221D | HK221F |
|---|---|---|
| Display Count | 3999 | 3999 |
| True RMS | Yes | Yes |
| AC Voltage | Yes | Yes |
| DC Voltage | Yes | Yes |
| AC Current | 4A / 40A / 200A | 40A / 200A |
| DC Current | No | Yes |
| Resistance | Yes | Yes |
| Capacitance | Yes | Yes |
| Frequency | 10Hz – 10MHz | 10Hz – 10MHz |
| Temperature | Yes | Yes |
| NCV & Live Wire | Yes | Yes |
| Special AC Voltage Range | No | Yes |
| Safety Rating | CAT III 600V | CAT III 600V |
| Best For | Electronics & HVAC | Automotive & Solar |
FAQ
What is the main advantage of the Honeytek HK221F?
The biggest advantage of the HK221F is its ability to measure both AC and DC current using the clamp jaw. This makes it highly suitable for automotive systems, solar installations, and industrial DC applications.
Can the HK221F measure solar panel current?
Yes. The HK221F is designed for solar PV troubleshooting and can accurately measure DC current from solar panels, charge controllers, and inverter systems.
Is the HK221F a True RMS clamp meter?
Yes. The HK221F uses True RMS measurement technology for accurate readings on non-linear electrical loads.
Does the HK221F support temperature measurement?
Yes. The meter supports temperature testing from -20°C to 1000°C (-4°F to 1832°F).
Is the HK221F suitable for automotive diagnostics?
Absolutely. The DC current clamp function makes it ideal for battery testing, alternator checks, and starter motor diagnostics.
What safety rating does the HK221F have?
The HK221F is rated CAT III 600V for professional electrical safety applications.
Why Choose Honeytek HK221F?
The Honeytek HK221F combines professional AC/DC current measurement, True RMS accuracy, compact portability, and multi-function diagnostics into one affordable mini clamp meter. It is an excellent solution for technicians working in automotive, solar, HVAC, industrial automation, and electrical maintenance industries.
Whether you need to troubleshoot DC battery systems, test inverter equipment, or perform general electrical maintenance, the HK221F delivers professional performance in a compact handheld design.
