FNIRSI DMT-99 smart digitalmultimeter 9999 counts True RMS auto-ranging

The FNIRSI DMT-99 is a smart digital multimeter designed for professional electricians, engineers, and hobbyists. It features a 9999-count EBTN color LCD display with true RMS measurement for accurate readings on non-sinusoidal waveforms. The multimeter offers auto-ranging and a smart mode that automatically selects the appropriate measurement function, making it easy to use for both beginners and experts.

Advantages

The DMT-99 combines advanced measurement capabilities with user-friendly features. Its smart mode simplifies operation by detecting the signal type and setting the correct range. The built-in rechargeable lithium battery provides long-lasting power, and the backlit display with flashlight ensures visibility in dark environments. Safety is prioritized with CAT III 1000V and CAT IV 600V ratings, protecting against voltage spikes.

Suitable for

• Electrical troubleshooting in residential, commercial, and industrial settings
• Testing and repairing electronic circuits and components
• Automotive diagnostics for voltage, current, and resistance measurements
• Educational purposes for learning electronics and electrical engineering

Key specifications

• Display: 9999-count EBTN color LCD with backlight
• True RMS: Yes
• DC Voltage: 0.1mV to 1000V
• AC Voltage: 0.1mV to 750V
• DC Current: 0.01mA to 10A
• AC Current: 0.01mA to 10A
• Resistance: 0.1Ω to 99.99MΩ
• Capacitance: 0.001nF to 99.99mF
• Frequency: 0.001Hz to 9.999MHz
• Temperature: -20°C to 1000°C (-4°F to 1832°F)
• Diode Test: Yes
• Continuity Test: Yes (with buzzer)
• NCV Detection: Yes
• Live Wire Detection: Yes
• Safety Rating: CAT III 1000V, CAT IV 600V
• Power Source: Built-in 1500mAh rechargeable lithium battery
• Sampling Rate: Approx. 3 times/second
• Special Features: Smart Mode, Auto-Ranging, Data Hold, Backlight, Flashlight, Auto Power Off, Relative Measurement

Recommendations

For best results, read the user manual carefully before first use. The multimeter comes with test leads and a charging cable. Ensure the battery is fully charged for optimal performance. Use the NCV function to detect live wires without contact. The smart mode is ideal for quick measurements, while manual mode offers more control for advanced users.