Description
Product Overview
The Yuecoom ESR02 Pro is a handheld LCR meter designed for accurate electronic component testing. Housed in a rugged black ABS shell weighing only 0.21 kg, the device runs on a 9 V battery, providing true portability for field work or cramped workbenches. It measures resistance from 0 Ω to 50 Ω, capacitance from 25 pF to 100 mF, and inductance from 0.01 mH to 20 H, while also offering transistor bias, MOSFET gate threshold, and diode forward voltage checks. The 2.2‑inch LCD features a backlight and clear icons, ensuring readability in low‑light environments. Dimensions of 5.51 × 3.15 × 1.97 in make it easy to store in a tool bag or pocket.
Usage
Designed for electronics technicians, hobbyists, and engineering students, the ESR02 Pro excels in diagnosing circuit boards, repairing appliances, and validating prototype components. Its auto‑testing mode automatically identifies pin configurations of SMD parts, displaying results instantly on the screen. Whether you are troubleshooting a faulty MOSFET in a power supply, checking capacitor ESR in an audio circuit, or verifying resistor values in a DIY project, the meter delivers quick, reliable data. 
Why Choose Us
Yuecoom combines years of experience in precision test equipment with a commitment to durability and user‑friendly design. The ESR02 Pro undergoes strict quality control, ensuring consistent accuracy across its wide measurement range. Its battery‑powered operation eliminates the need for mains power, reducing setup time and increasing safety in confined spaces. The device also includes built‑in safety protection that prevents damage to sensitive components during testing, a feature rarely found in entry‑level meters.
Key Features
- Wide measurement range: 0 Ω‑50 Ω, 25 pF‑100 mF, 0.01 mH‑20 H for comprehensive component analysis.
- Auto‑pin detection for SMD parts, eliminating manual wiring and reducing error.
- Backlit LCD with clear icons for easy reading in dim environments.
- Battery‑powered (9 V) for true portability and on‑site diagnostics.
- Built‑in safety protection to guard both the meter and the component under test.
FAQ
What types of components can the ESR02 Pro test?
The meter can measure resistors, capacitors, inductors, diodes, NPN/PNP transistors, MOSFETs (both N‑channel and P‑channel), and thyristors, providing key parameters such as ESR, forward voltage, and gate threshold.
How does the auto‑testing function work?
When a component is placed on the test leads, the meter automatically identifies the pin layout, selects the appropriate test mode, and displays the result on the LCD without manual selection.
Is the device suitable for professional workshop use?
Yes. Its robust ABS housing, battery operation, and safety protections make it ideal for both field service technicians and workshop environments where reliability and speed are essential.
Can the meter store measurement data?
The ESR02 Pro does not have data logging capabilities; it is intended for immediate readout and quick verification tasks.
What is the warranty period?
Yuecoom provides a one‑year limited warranty covering manufacturing defects and normal wear under typical usage conditions.




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