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FNIRSI Manuals & User Guides

FNIRSI manufactures affordable and innovative electronic test equipment, including digital oscilloscopes, multimeters, signal generators, and smart soldering tools for engineers and hobbyists.

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About FNIRSI manuals on Manuals.plus

FNIRSI is a technology company specializing in the research, development, and manufacturing of electronic testing and measurement instruments. The brand offers a wide range of intelligent and portable devices such as digital oscilloscopes, handheld multimeters, signal generators, USB testers, and smart soldering irons. Known for combining high performance with user-friendly interfaces and affordability, FNIRSI products cater to maintenance professionals, engineers, electronics enthusiasts, and DIYers worldwide. The company continuously updates its firmware and product line to meet the evolving needs of the electronics community.

FNIRSI manuals

Latest manuals from manuals+ curated for this brand.

FNIRSI WD-02 Wire Crimper Instruction Manual

January 25, 2026
FNIRSI WD-02 Wire Crimper Specifications Usage time: 2 hours Battery: 3.7V 300mAH Dimensions: 138*68*22mm Auto shutdown time: 5 minutes Product Usage Instructions Basic Settings When booting for the first time,…

FNIRSI DPS150 DC Power Supply User Manual

December 17, 2025
FNIRSI DPS150 DC Power Supply User Manual Module 1 – Getting Started with the ESP32 & EEK Introduction Resources for EEK Module 1 Installing IDE Adding ESP32 Board Support USB…

FNIRSi DST210 Multifunctional Oscilloscope Multimeter User Manual

November 27, 2025
FNIRSi DST210 Multifunctional Oscilloscope Multimeter Please read this instruction manual carefully before using the product and keep it properly. Safety Requirements Environmental Requirements Precautions Avoid high temperatures, open flames, corrosive…

FNIRSI LCR-P1 Тестер Транзисторов: Инструкция по эксплуатации и спецификации

User Manual
Подробное руководство пользователя и технические характеристики многофункционального электронного тестера FNIRSI LCR-P1. Охватывает описание прибора, панель инструментов, параметры тестирования различных компонентов (транзисторов, диодов, конденсаторов, резисторов, индукторов, стабилитронов, SCR), инструкции по эксплуатации,…

FNIRSI DSO510 Digital Oscilloscope Instruction Manual

Instruction Manual
Comprehensive instruction manual for the FNIRSI DSO510 handheld digital oscilloscope, covering product introduction, panel layout, button functions, technical parameters, screen indications, firmware updates, and contact information.

FNIRSI manuals from online retailers

FNIRSI LC1020E 100kHz LCR Meter and SMD Tester User Manual

LC1020E • January 22, 2026
Comprehensive user manual for the FNIRSI LC1020E 100kHz LCR Meter and SMD Tester, covering setup, operation, measurement modes, smart sorting, calibration, specifications, and troubleshooting for accurate component testing.

FNIRSI GC-01 Nuclear Radiation Detector User Manual

GC-01 • January 18, 2026
Comprehensive user manual for the FNIRSI GC-01 Nuclear Radiation Detector. Includes setup, operating instructions, alarm settings, unit configuration, maintenance, troubleshooting, and detailed technical specifications for this portable Beta,…

FNIRSI FPM-02 Environmental Monitor User Manual

FPM-02 • January 17, 2026
Comprehensive user manual for the FNIRSI FPM-02 3-in-1 Illuminance, Temperature, and Humidity Environmental Monitor, covering setup, operation, maintenance, and technical specifications.

Fnirsi GC-01 Nuclear Radiation Detector User Manual

GC-01 • December 24, 2025
Comprehensive user manual for the Fnirsi GC-01 Nuclear Radiation Detector, providing instructions on setup, operation, maintenance, and specifications for accurate radiation measurement.

FNIRSI SWM-10 Portable Battery Spot Welder User Manual

SWM-10 • December 3, 2025
Comprehensive user manual for the FNIRSI SWM-10 portable battery spot welder. Learn about setup, operation, maintenance, and troubleshooting for this 5000mAh device, capable of welding up to 0.25mm…

FNIRSI FNAC-28 / FNB58 USB Tester User Manual

FNAC-28 • 1 PDF • February 3, 2026
User manual for the FNIRSI FNAC-28 / FNB58 Type-C and USB-A tester, providing instructions for operation, features, specifications, and troubleshooting for fast charging protocol detection, voltage, current, and…

FNIRSI DMC-100 Clamp Meter User Manual

DMC-100 • 1 PDF • January 31, 2026
Comprehensive user manual for the FNIRSI DMC-100 Clamp Meter, covering setup, operation, maintenance, specifications, and troubleshooting for AC/DC current, voltage, resistance, capacitance, frequency, temperature, diode, continuity, NCV, and…

FNIRSI ERD-10 EMF Detector User Manual

ERD-10 • January 24, 2026
Comprehensive instruction manual for the FNIRSI ERD-10 EMF Detector, covering setup, operation, specifications, and maintenance for accurate electromagnetic field and radiofrequency detection.

FNIRSI BTM-24 12V/24V Car Battery Tester Instruction Manual

BTM-24 • January 23, 2026
Comprehensive instruction manual for the FNIRSI BTM-24 12V/24V Car Battery Tester, covering product overview, specifications, setup, operating instructions for battery, cranking, load, and charging tests, maintenance, troubleshooting, and…

FNIRSI DMT-99 Digital Multimeter User Manual

DMT-99 • January 20, 2026
Comprehensive instruction manual for the FNIRSI DMT-99 Digital Multimeter, covering setup, operation, maintenance, specifications, and troubleshooting for accurate electrical measurements.

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FNIRSI support FAQ

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  • How do I update the firmware on my FNIRSI device?

    For many FNIRSI devices, enter bootloader mode (often by holding a specific button like 'OK' or a direction key while powering on), connect the device to a computer via USB Type-C, and copy the official firmware file to the removable drive that appears.

  • Where can I find the latest user manuals and software?

    You can download the latest user manuals, PC software, and firmware updates directly from the 'Manuals & Firmware' section of the official FNIRSI website.

  • What is the warranty period for FNIRSI products?

    FNIRSI typically offers a one-year limited warranty from the date of purchase for the main unit, covering defects in materials and workmanship under normal use.

  • How do I calibrate my oscilloscope probe?

    Connect the probe to the self-test signal terminal (usually a 1kHz square wave), display the waveform, and use the adjustment tool to turn the compensation capacitor on the probe until the waveform edges are flat and square.