Overview
The DMT-99 is FNIRSI’s flagship 9999-count intelligent digital multimeter. Gone are the days of squinting at blurry LCDs; the DMT-99 uses a vibrant color display to show readings, real-time frequency, and even minimum/maximum values simultaneously. With its wide measurement range and high precision, it is designed for electronic debugging, home appliance repair, and DIY robotics.
Key Features
Smart Measurement: In “SMART” mode, the meter automatically identifies DC/AC voltage, resistance, and continuity—perfect for beginners who are afraid of setting the wrong range.
9999 Counts True RMS: Provides higher precision and more accurate readings for non-linear signals compared to standard 1999 or 6000-count meters.
2.4″ Color TFT Display: A high-brightness screen with a wide viewing angle. It even shows a visual “Bar Graph” and real-time environment temperature.
USB-C Rechargeable: Features a built-in 1500mAh lithium battery. No more hunting for 9V batteries in the middle of a project!
Full Protection: NCV (Non-Contact Voltage) detection, double ceramic fuses, and an over-range alarm ensure maximum safety for the user.
Technical Specifications ⚙️
| Measurement | Range | Accuracy |
| DC Voltage | 9.999V ~ 1000V | pm(0.5\%+3) |
| AC Voltage | 9.999V ~ 750V | pm(1\%+3) |
| DC Current | 9999µA ~ 10A | pm(1.2\%+3) |
| AC Current | 9999µA ~ 10A | pm(1.5\%+3) |
| Resistance | 999.9Ω ~ 99.99MΩ | pm(0.5\%+3) |
| Capacitance | 9.999nF ~ 99.99mF | pm(2.0\%+5) |
| Frequency | 9.999Hz ~ 9.999MHz | pm(0.1\%+2) |
Advanced Functions 🛠️
NCV Detection: Find hidden wires in walls without touching them.
Live Wire Test: Identify “Phase” vs “Neutral” using a single probe.
Diode & Continuity: Fast-response buzzer for tracing circuit paths.
Data Logging: Record Max/Min values to catch intermittent power drops.

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