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The FNIRSI SWM-20 handheld spot welder is a high-efficiency, user-friendly, and easy-to-carry welding tool. It features dual-pulse spot welding technology, ensuring more stable and reliable welds, and also includes a convenient power bank function. Equipped with a 2.4-inch HD display, the SWM-20 offers clear and intuitive operation. Its rotary encoder knob allows users to adjust parameters quickly and precisely, making it easy to set the required welding settings and improving the overall user experience. Features 2-in-1: Spot Welder & 5000 mAh Power Bank 1200 A High-Power Output for Strong, Reliable Welds Dual-Pulse Technology for Cleaner & More Stable Welding Dual A-Grade Batteries with 8 Safety Protections 0.1–0.5 mm Multi-Material Welding Capability 10,000+ Precision Adjustment Levels for Professional Control 2.4-inch TFT Display with Real-Time Data Monitoring Specifications Max Welding Current 1200 A Battery Capacity 5000 mAh Charging 5 V/2.1 A Discharging 5 V/2.1 A Welding Materials Nickel, Iron, Stainless Steel Welding Thickness 0.1‒0.5 mm Level 4 Preset Combination Levels Dimensions 13.3 x 8.8 x 3.2 cm Weight 850 g Included 1x FNIRSI SWM-20 Spot Welder 2x Welding Pens 2x Replacement Tips 1x Nickel Strip 1x USB-C Cable 1x Manual Downloads Manual

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The FNIRSI HRM-10 is a portable, high-precision battery internal resistance and voltage tester. This device offers true four-wire measurement and is designed for both accuracy and ease of use. It automatically measures internal resistance and voltage values simultaneously, displaying the results on its HD color screen. Users have the option to manually adjust voltage and resistance ranges to suit their needs. The device also includes a sorting mode that automatically filters the good and bad batteries based on user-set thresholds. Additionally, it supports the storage of historical data and allows for exporting measurement records in table format. Features High Measurement Accuracy Tabular Data Export Auto-Evaluate Measurement Results 8 Threshold Settings HD Color Screen Folding Stand 1000 mAh Lithium Battery Specifications Voltage Resistance Measuring range 0-100 V (DC) 0-200 Ω Accuracy ±0.5% ±0.5% Gear Automatic, 1 V, 10 V, 100 V Automatic, 20 mΩ, 200 mΩ, 2 Ω, 20 Ω, 200 Ω Instrument test signal frequency 1 Khz (AC) Rechargeable USB-C (5 V/1 A) Built-in battery 1000 mAh lithium battery User calibration Yes Sorting mode Yes History record Yes Recorded data export Yes Working environment –10°C to +45°C, relative humidity <80% Storage environment –20°C to +80°C, relative humidity <80% Dimensions 158.7 x 80.5 x 28.4 mm Weight 225 g Included 1x FNIRSI HRM-10 Internal Resistance Tester 1x Clip Test Line 1x USB-C data cable 1x Manual Downloads Manual Firmware V0.3

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The FNIRSI SG-003A multi-functional Signal Generator a.k.a. Process Meter/Calibrator is a high-precision voltage/current generator and meter. The SG-003A provides highly accurate reference voltages or currents for testing and calibrating other measurement instruments like multimeters and oscilloscopes. Besides voltages and currents, the SG-003A also generates rectangular pulse signals with precisely programmable frequencies and duty cycles. Its converter mode turns the SG-003A into a precision voltage-controlled current source, or current-controlled voltage source, and even a voltage- or current-controlled frequency generator. The SG-003A is a great tool for checking your multimeter’s accuracy and precision, and for testing e.g. LEDs. Features Accuracy (voltage/current) 0.1% ±0.005 Resolution (current) 0.01 mA Frequency 0-10 kHz Resolution 5 digits Output power 24 V Display 2.4" TFT LCD (320 x 240) Dimensions 92 x 72 x 30 mm Weight 165 g Specifications Signal Range Precision Resolution Max load External power supply Active current output 0~24 mA ±(0.1% + 0.005) 0.01 mA 750 Ω Passive current output (XMT) 0~24 mA ±(0.1% + 0.005) 0.01 mA 0~30 V Voltage output 0~24 V ±(0.1% + 0.005) 0.01 V 24 V loop 0~24 mA ±(0.1% + 0.005) 0.01 mA Frequency output 0~9999 Hz ±2% 5 digits Current input 0~24 mA ±(0.1% + 0.005) 0.01 mA Voltage input 0~30 V ±(0.1% + 0.005) 0.01 V Included 1x FNIRSI SG-003A Signal generator 4x Test clips 1x USB charger 1x USB-C cable 1x Manual Downloads Manual Firmware V4.3

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The FNIRSI LC1020E High-Precision LCR Meter with ESR tester is a portable and intelligent solution for testing electronic components, offering a basic accuracy of up to 0.3%. It is ideal for engineers, technicians, and makers. The device supports L/Q, C/D, and R/D measurements using both series and parallel equivalent circuit models, and features a 2.8-inch TFT color display. With preset thresholds and audio-visual alerts, it enables fast pass/fail evaluation, making it perfect for batch testing and quality control. Supporting test frequencies up to 100 kHz, it is well suited for high-frequency analysis of inductors, capacitors, and resistors. Features ±0.05% accuracy with 4.5-digit resolution Automatic R/L/C identification for fast measurements 5 test frequencies (100 Hz–100 kHz) & 3 voltage levels (0.1–0.6 V) Dual display: L/C/R/Z + X/D/Q/θ/ESR Sorting mode & bias voltage for batch testing Dual ports (3-/5-terminal) with 4-wire Kelvin support Data hold & logging for efficient workflow Compact, rechargeable (3000 mAh) – ideal for lab & field use Specifications General Test Frequency 100 Hz, 120 Hz, 1 kHz, 10 kHz, 100 kHz Basic Accuracy 0.3% Display 2.8-inch TFT LCD display Display Digits Main Parameter: 4.5 digits Secondary Parameter: 4.5 digits Measurement Parameters Main Parameters: AUTO/R/C/L/Z Secondary Parameters: X/D/Q/θ/ESR Measurement Range L: 0-100H C: 0-100mF R: 0-10M Internal Bias 0.0 V, 0.5 V Test Level 0.1 V, 0.3 V, 0.6 V Calibration Functions Open circuit calibration, Short circuit calibration Comparison Function Used to calculate the relative error between the component measurement value and the nominal value, displayed as a percentage, and provides filtering results. Nominal values and tolerance can be set, with tolerance range adjustable from 0.1% to 99.9% Function Record Checks if the measured component data meets the set nominal value and tolerance, recording the number of successful and failed measurements Test Terminal Configuration Three-terminal, Five-terminal Output Impedance 100Ω Interface USB-C (Virtual serial port) Others Language settings, Screen brightness, Sound settings, Auto power-off, Calibration settings, System information Battery 3000 mAh Lithium battery Dimensions 18.5 x 8.5 x 3.5 cm Weight 680 g Capacitance (C) Range: 1mF-100mF 100 Hz: 5% ±5 digits 1 kHz: 3% ±5 digits 10 kHz: / 100 kHz: / Range: 1uF-1mF 100 Hz: 1% ±4 digits 1 kHz: 0.5% ±5 digits 10 kHz: 2% ±5 digits 100 kHz: 3% ±4 digits Range: 1nF-1uF 100 Hz: / 1 kHz: 0.3% ±2 digits 10 kHz: 0.4% ±2 digits 100 kHz: 1% ±4 digits Range: 1pF-1nF 100 Hz: / 1 kHz: 2% ±2 digits 10 kHz: 1.5% ±2 digits 100 kHz: 2% ±4 digits Inductance (L) Range: 1H-100H 100 Hz: 2% ±5 digits 1 kHz: 2% ±5 digits 10 kHz: / 100 kHz: / Range: 1mH-1H 100 Hz: 0.4% ±5 digits 1 kHz: 0.3% ±2 digits 10 kHz: 0.4% ±3 digits 100 kHz: 2.5% ±5 digits Range: 10uH-1mH 100 Hz: 3% ±5 digits 1 kHz: 0.5% ±4 digits 10 kHz: 0.5% ±3 digits 100 kHz: 1.5% ±5 digits Range: 1uH-10uH 100 Hz: / 1 kHz: 2% ±5 digits 10 kHz: 2% ±5 digits 100 kHz: 4% ±5 digits Resistance (R) Range: 1MΩ-10MΩ 100 Hz: 5% ±4 digits 1 kHz: 3% ±3 digits 10 kHz: / 100 kHz: / Range: 1KΩ-1MΩ 100 Hz: 0.4% ±4 digits 1 kHz: 0.2% ±2 digits 10 kHz: 0.3% ±3 digits 100 kHz: 0.6% ±5 digits Range: 1Ω-1KΩ 100 Hz: 1.5% ±4 digits 1 kHz: 0.3% ±2 digits 10 kHz: 0.3% ±3 digits 100 kHz: 0.6% ±5 digits Range: 10mΩ-1Ω 100 Hz: 4% ±4 digits 1 kHz: 2% ±5 digits 10 kHz: 2% ±5 digits 100 kHz: 5% ±5 digits Included 1x FNIRSI LC1020E LCR Meter 1x Kelvin Test Clip 2x Test Leads (1x black, 1x red) 1x Shorting Plate 1x USB-C Cable 1x Manual Downloads Manual Firmware V1.1

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The FNIRSI FNB58 USB tester (with Bluetooth) is a comprehensive and very accurate USB voltage and current meter. It features a 2.0-inch full-color HD TFT display, built-in USB-A, micro USB and USB-C interface. With this device you can measure the power supply or power consumption of products or the charging power of cell phones and power supplies. You can also determine the fast charging protocol of chargers. Features USB-A and USB-C interface 2.0" HD display Data at a glance Wide compatibility Ultra-precise data detection Play with fast charging technology Automatic protocol detection (PD2.0, 3.0, 3.1, PPS, QC2.0, 3.0, FCP, SCP, AFC, PE, DASH VOOC, SuperVOOC and more) Simple user interface, easy to operate 4 function curve displays (real-time voltage and current curve, offline curve recording, D+/D- voltage curve, high-speed power supply ripple measurement) Cable detection 10 groups of energy recording battery capacity calculation PC connectivity for data logging and firmware updates Bluetooth app for Android devices Specifications Voltage range 4-28 V Current range 0-7 A Power range 0-120 W Load equivalent internal resistance 0-9999.9 Ω D+/D- voltage 0-3.3 V Capacity 0-9999.99 Ah Power consumption 0-9999.99 Wh Cable resistance 0-9999.9 Ω Interfaces micro USB, USB-A, USB-C Dimensions 42 x 13 x 82 mm Downloads Manual Firmware V0.68

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The FNIRDSI DSO-TC4 is a multifunctional transistor oscilloscope that is both comprehensive and practical. It is designed for use in maintenance and R&D applications, integrating an oscilloscope, transistor tester, and signal generator into a single device. Features Equipped with a 2.8-inch TFT color screen for a clear and intuitive display Built-in high-capacity rechargeable lithium battery (1500 mAh) with a standby time of up to 4 hours Compact and lightweight, ideal for mobile use Specifications Oscilloscope Analog Bandwidth 10 MHz Real-Time Sampling Rate 48 MSa/s Input Impedance 1 MΩ Coupling Mode AC/DC Test Voltage Range 1:1 Probe: 80 Vpp (+40 V) 10:1 Probe: 800 Vpp (+400 V) Vertical Sensitivity 10 mV/div~10 V/div (X1 range) Vertical Displacement Adjustable with indication Time Base Range 50ns~20s Trigger Mode Auto/Normal/Single Trigger Type Rising edge, Falling edge Trigger Level Adjustable with indication Waveform Freeze Yes (HOLD function) Automatic Measurement Max, Min, Avg, RMS, Vpp, Frequency, Cycle, Duty Cycle Component Tester Transistor Amplification factor "hfe"; Base-Emitter voltage "Ube", Ic/Ie, Collector-Emitter reverse leakage current "Iceo", Ices, Forward voltage drop of protection diode "Uf" Diode Forward voltage drop <5 V (Forward voltage drop, Junction capacitance, Reverse leakage current) Zener Diode 0.01~32 V Reverse Breakdown Voltage (K-A-A Test Area) Field-Effect Transistor (FET) JFET: Gate capacitance "Cg", Drain current Id under "Vgs", Forward voltage drop of protection diode "Uf" IGBT: Drain current Id under Vgs, Forward voltage drop of protection diode Uf MIOSTET: Threshold voltage "Vt", Gate capacitance "Cg", Drain-Source resistance "Rds", Forward voltage drop of protection diode "Uf" Unidirectional SCR Trigger voltage <5V, Gate level (Gate voltage) Bidirectional SCR Trigger current <6mA (Gate voltage) Capacitor 25pF~100mF, Capacitance value, Loss factor "Vloss" Resistor 0.01Ω~50MΩ Inductor 10μH~1000μH, DC resistance DS18B20 Temperature sensor, Pins: GND, DQ, VDD DHT11 Temperature and humidity sensor, Pins: VDD, DATA, GND Signal Generator Output Waveform Supports 13 waveform outputs Waveform Frequency 0-50 KHz Square Wave Duty Cycle 0-100% Waveform Amplitude 0.1-3.0 V General Display 2.8-inch TFT color screen Backlight Brightness adjustable Power Supply USB-C (5 V/1 A） Battery 3.7 V/1500 mAh Languages English, German, Spanish, Portuguese, Russian, Chinese, Japanese, Korean Dimensions 90 x 142 x 27.5 mm Weight 186 g Included 1x FNIRSI DSO-TC4 (3-in-1) Oscilloscope (10 MHz) 1x P6100 Oscilloscope probes (10X) 1x Alligator clip probe 3x Test hooks 1x Adapter 1x USB-C charging cable 1x Manual Downloads Manual Firmware V0.0.7 (+V1.0.9)

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The FNIRSI DPS150 is a high-performance adjustable DC power supply that features a USB-C input interface and multiple power supply modes, allowing precise adjustment of output voltage (0-30 V) and current (0-5 A). It provides efficient, low-consumption, and stable output, equipped with multiple safety protection functions including overvoltage, overcurrent, overload, overheating, and reverse connection. It can be flexibly applied to serial connection of multiple devices, with rich and user-friendly display and operation, compact and portable design, meeting various application needs. Features 30 V, 5 A, 150 W variable DC power with 0.01 V, 0.001 A precision, CC/CV modes, and <20 mV ripple to protect sensitive electronics. Supports PC, QC, and DC inputs with programmable outputs and 6 preset voltage/current settings. Compatible with 4 mm banana plugs, U-shaped terminals, and copper wires for various equipment. 8 safety mechanisms including overvoltage, current, short circuit, and overheating protection. 2.8-inch HD IPS screen with 90° flip, numerical and curve displays for easy monitoring. Small, space-saving design for use in labs, repairs, and DIY projects. Specifications Input Voltage 5~32 V DC Input Current 100 mA-5 A Output Voltage 0-30 V Output Current 0~5 A Output Power 0-150 W Input Way PD fast charger QC fast charger Power bank DC power adapters Operating Environment 0-40°C Load Regulation 0.49% Full Load Efficiency 96.30% Display 2.8 inch (320 x 240) Dimensions 106 x 76 x 28 mm Weight 178 g Included 1x DPS150 Power Supply 2x Alligator clip wires (black & red) 1x C2C PD charging cable 1x 100 W PD GaN Adapter (EU) 1x Micro USB cable 1x Manual Downloads Manual Firmware V0.0.1

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