Multimeters · Digital

DM 321T True-RMS Digital Multimeter - Manual Ranging, 3½-digit

True-RMS, manual-ranging 3½-digit DMM with transistor hFE test, capacitance, backlight, and protective holster.

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CIE® Guarantee

CIE® Registered Trade Mark
Calibrated Before Despatch
12-Month Warranty
Made in India
Custom Ranges Available

About This Instrument

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).

Technical Specifications

Specification	Value
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)
Warranty	12 months against manufacturing defects only

What's Included

Test Leads
User Manual
Battery (installed / kept aside)
Holster

Key Applications

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

12-Month Warranty · Direct After-Sales Support

Every CIE® instrument carries a 12-month warranty against manufacturing defects only. After-sales support is handled directly by CIE - not a distributor network. Non-standard ranges or custom specifications can be manufactured to your requirement.