FNIRSI LCR-ST2 Plus LCR & ESR Meter 2-in-1 Digital Tweezers Bridge

The FNIRSI LCR-ST2 Plus is a versatile and high precision handheld LCR and ESR meter with smart tweezers and Kelvin clip capability, designed for accurate electronic component testing on the bench or in the field. It combines advanced measurement functions in one compact tool, letting you measure resistance, capacitance, inductance, ESR, diodes, and voltage with professional grade flexibility. 

With its dual mode design, tweezer probes for SMD parts and a 4-wire Kelvin clip for larger or through hole components, the Plus version minimizes contact resistance errors and expands usability across a wider range of components. Easy to navigate on its bright 1.47″ HD auto rotate screen, the LCR-ST2 Plus is ideal for engineers, technicians, makers, and hobbyists alike.

Highlights:

• All in one precision electronic component tester.
• Dual mode measurement: tweezer & Kelvin 4-wire testing.
• Multi frequency sweep 100Hz-100kHz for detailed analysis.
• Intelligent sorting & OK/NG tolerance grading.
• Auto rotate 1.47″ HD color display.
• ±30V voltage measurement protection.
• Portable design with magnetic attachment and USB C charging.

Specifications:

• Model: FNIRSI LCR-ST2 Plus.
• Component Parameters Measured:
  • Resistance: ~10mΩ-10MΩ.
  • Capacitance: ~1pF-22mF.
  • Inductance: ~1µH-10H.
  • Diode: ≤ 0.7V forward.
  • Voltage: ±30V DC.
• Test Frequencies: 100Hz, 120Hz, 1kHz, 10kHz, 100kHz.
• RMS Test Levels: 0.1V / 0.3V / 0.6V / 1.0V.
• Measurement Parameters Displayed: R, C, L, ESR, Q, D, Z, X, θ.
• Display: 1.47″ HD auto rotate screen.
• Battery: Built in 300mAh lithium ion (~3h runtime) with, USB C charging.
• Interface: USB C (charging/data).
• Dimensions: ~31×170.7×20.3mm.
• Weight: ~60.8g.

Ideal For:

• 🔍 Professional and hobbyist electronics testing.
• 🧪 Accurate component R/C/L/ESR measurement.
• 📦 SMD production verification & quality control.
• 🔌 Through-hole components & larger device analysis.
• 🛠️ Engineering labs, repair shops & DIY workstations.
• 🎓 STEM education and maker projects.