True-RMS Digital Multimeter - Manual Ranging, 3½-digit

About.

The DM 321T is a 3½-digit True-RMS digital multimeter for general electrical and electronic test work. It is a manual-ranging instrument, measuring AC/DC voltage, AC/DC current, resistance, and capacitance, alongside continuity test, diode test, and transistor (hFE) test. Supplied with a protective holster. True-RMS measurement gives accurate readings on non-sinusoidal AC waveforms - useful when working on circuits with switching loads or harmonics. DC voltage up to 1000 V; DC current up to 20 A. Auto power-off and data hold standard. Dimensions: 178 × 86 × 52 mm. Weight: approx. 360 g (incl. battery and holster).

• General electrical maintenance and panel testing
• Accurate AC measurement on non-sinusoidal loads (True-RMS)
• Basic electronic troubleshooting including transistor and component testing

Specifications.

Measurement Type

True-RMS

Ranging

Manual

Display

3½-digit with backlight

DC Voltage

200 mV / 2 V / 20 V / 200 V / 1000 V | ±(0.5% rdg + 3 digits)

AC Voltage (True-RMS)

2 V / 20 V / 200 V / 750 V | ±(0.8% rdg + 5 digits) @ 40 Hz–1 kHz

DC Current

200 µA / 2 mA / 20 mA / 200 mA / 20 A | ±(0.8% rdg + 10 digits)

AC Current (True-RMS)

20 mA / 200 mA / 20 A | ±(1.0% rdg + 15 digits) @ 40 Hz–400 Hz

Resistance

200 Ω / 2 KΩ / 20 KΩ / 200 KΩ / 2 MΩ / 20 MΩ | ±(0.8% rdg + 3 digits)

Capacitance (Auto Ranging)

6 nF – 20 mF | ±(3.5% rdg + 20 digits)

Transistor Test

hFE

Additional Functions

Continuity test, diode test, REL measurement, AC mains frequency test (750 V range), data hold, backlight, auto power-off, low battery indication

Power Supply

2 × AA battery

Dimensions (L×W×H)

178 × 86 × 52 mm

Weight

Approx. 360 g (incl. battery and holster)