Smart Digital Multimeter FNIRSI DMT‑99 10000 Counts True RMS NCV Capacitance Temperature Current Voltage Multifunctional Tester

🎯Features:

1. 10000 Counts True RMS High-Precision Measurement
DMT-99 delivers 10000-count resolution with True RMS for accurate AC/DC voltage, current, resistance, capacitance, frequency, and temperature readings—ideal for engineering, labs, automotive, and home electronics troubleshooting.

2. 2.4" Color TFT Display with Real-Time Trend Graphing
Unlike basic multimeters, the 2.4-inch full-color screen shows measurement curves in Record Mode, helping you visualize signal stability, voltage sag, and temperature drift that numbers alone might miss.

3. Smart Monitor Mode with Custom Threshold Alarms
Set min/max thresholds for voltage, current, or temperature—the buzzer alerts you when readings drift outside safe limits. Perfect for hands-free, unattended circuit monitoring.

4. Intelligent Auto-Recognition & Multi-Function
Auto mode detects voltage, resistance, or continuity automatically—no more range guessing. Supports NCV non-contact voltage detection, LIVE wire identification, diode testing, and capacitance up to 99.99mF.

5. USB-C Rechargeable 1500mAh Battery
Built-in lithium battery eliminates 9V battery waste. USB-C charging for convenience. Compact 185g design with CAT III 1000V protection and dual ceramic fuses for safety.

Q1: What does "10000 Counts" mean and why does it matter?
A: 10000 counts means the meter can display up to 9.999V/99.99V/999.9V readings with higher resolution than standard 2000 or 6000-count meters. This provides more precise measurements, especially important for sensitive low-voltage electronics and circuit diagnostics.

Q2: What is True RMS and do I need it?
A: True RMS accurately measures non-sinusoidal AC waveforms (like those from variable speed drives, inverters, or switched-mode power supplies). Standard average-responding meters can have errors up to 40% on these signals—True RMS ensures you get the real effective value.

Q3: How does the Monitor Mode with threshold alarm work?
A: In Monitor Mode, you set custom minimum and maximum thresholds for voltage, current, or temperature. If readings go outside this safe range, the buzzer sounds an alarm. This is ideal for long-term unattended monitoring, like checking battery discharge or temperature drift.

Q4: What can I measure with the NCV and LIVE functions?
A: NCV (Non-Contact Voltage) detects AC electromagnetic fields without touching bare wires—just bring the meter's top near the test point. LIVE mode uses a single red test lead to identify which wire is the live/hot wire versus neutral or ground when checking mains power.

Q5: How long does the battery last and how do I charge it?
A: The built-in 1500mAh lithium battery provides up to 10 hours of runtime per charge. It charges via USB-C port (cable included)—no need to buy or replace 9V batteries. Note: Do not use the device while charging.