3 best FNIRSI Multimeter for car audio If you’re tuning amps, chasing ground noise, or checking voltage drops in a car audio system, a solid multimeter is non-negotiable. I’ve spent time with three FNIRSI models that claim to handle everything from DC offset checks to frequency sweeps. The DMT-99’s 9999-count display and recording mode caught … Read more

FNIRSI FNB-C2 PD 3.1 USB C Tester Review Ever wonder if your fancy new USB-C charger is actually delivering the power it claims? I’ve been down that rabbit hole, and the FNIRSI FNB-C2 PD 3.1 USB C Tester is the tool I wish I had earlier. It handles up to 240W and uses a 20-bit … Read more

5 best FNIRSI Multimeter for hobbyists If you’re a hobbyist like me, you know the frustration of grabbing a multimeter that can’t keep up with your projects. You need accurate readings, solid build quality, and features that actually matter for electronics work, not just a cheap meter that lies to you. I’ve spent hours testing … Read more

FNIRSI 1014D 2 in 1 Oscilloscope Review I was tired of lugging around separate gear for my electronics bench work. I needed a scope that could also generate test signals without taking up all my desk space. So I tested the FNIRSI 1014D Oscilloscope 2 in 1 Digital Oscilloscope DDS Signal Generator to see if … Read more

FNIRSI DST-201 3IN1 Multimeter Oscilloscope Review I was tired of carrying separate tools for voltage checks, waveform testing, and signal generation. So I picked up the FNIRSI DST-201 3IN1 Digital Multimeter 19999 Counts TRMS, 1MHz Bandwidth Handheld Oscilloscope Multimeter DDS Generator to see if it could really replace three devices. This little black box packs … Read more

FNIRSI HRM-10 Battery Tester Review Ever wonder if that pile of old batteries is dead or worth keeping? I grabbed the FNIRSI HRM-10 Voltage Internal Resistance Battery Tester to finally stop guessing, and it measures both voltage and internal resistance up to 200Ω and 100V. This milliohmmeter is built for anyone who works with batteries … Read more

FNIRSI 1013D Plus Oscilloscope Review I’ve been tinkering with electronics for years, and I finally got tired of hauling a bulky bench scope around. I picked up the FNIRSI 1013D Plus Oscilloscope – Portable Handheld Tablet Oscilloscope with 100X High Voltage Probe, 2 Channels 100Mhz B to see if it could replace my old setup. … Read more

Losing the manual doesn’t mean you can’t understand your Noco Genius charger. The LEDs on the front tell you everything about your battery’s health and charge status. Knowing what these lights mean helps you charge safely and avoid damaging your battery. Each Noco Genius model uses a similar color and pattern system to communicate. A … Read more

FNIRSI DSO152 Handheld Oscilloscope Review I was tired of hauling a bulky benchtop oscilloscope out for simple checks on audio circuits and automotive sensors. The FNIRSI DSO152 Handheld Oscilloscope – 2.8″ TFT Digital Oscilloscope Kit 200KHz Bandwidth 2.5MS/s High Sampling Rate Port promised a pocket-friendly alternative with a real-time sampling rate of 2.5 MS/s and … Read more

FNIRSI 2C53P Tablet Oscilloscope Multimeter Review I was tired of juggling a separate oscilloscope, multimeter, and signal generator on my workbench. So I picked up the FNIRSI 2C53P Handheld Tablet Oscilloscope Multimeter DDS Signal Generator 3 in 1 to see if it could really replace three devices with one 4.3-inch touch screen. This 3-in-1 is … Read more