4 (1/2) Digital Multimeter ( HTC – DM-23 )

Description

The HTC DM‑23 Digital Multimeter is a professional-grade 4½-digit instrument offering 20,000‑count resolution, designed for technicians, engineers, and electronics hobbyists seeking high precision in a rugged handheld form. Built to IEC 1010 safety standards, this meter features a large backlit LCD display with manual ranging, ensuring crystal-clear readings with 28 mm-high digits even in low-light environments and maintaining continuous operation without unintended shutdowns.

At its core, the DM‑23 delivers outstanding measurement capabilities. DC voltage spans from 200 mV to 1000 V, with resolution down to 10 µV, and accuracy rated at ±(0.05% + 3 digits) for the lower ranges and ±(0.1% + 5 digits) at 1000 V. AC voltage covers up to 750 V, with resolution to 10 mV and accuracy of ±(0.8% + 25 digits) for lower ranges and ±(1.0% + 25 digits) at the high end.

Both DC and AC current measurements extend up to 20 A, with finely graduated ranges: 20 µA, 2 mA, 20 mA, 200 mA, and 20 A. Accuracy ratings include ±(0.5% + 4 digits) for 20 µA, ±(0.8% + 6 digits) for 200 mA, and ±(2.0% + 15 digits) for full-scale 20 A DC. AC current accuracy is specified at ±(1.5% + 25 digits) for mid-range and ±(2.5% + 35 digits) on the 20 A scale.

Resistance measurement extends up to 200 MΩ, with resolution from 0.01 Ω to 10 kΩ and accuracy of ±(0.2% + 10 digits) for low ranges, evolving to ±(5.0% -20 digits) at the highest range. A continuity buzzer triggers under approximately 30 Ω ±10 Ω for quick diagnostics.

Capacitance capability spans 2 nF to 200 µF, with resolution from 0.1 pF to 10 nF and accuracy of ±(3.5% + 10 digits) at the low end up to ±(3.8% + 20 digits) at the top capacitance. The meter also supports frequency measurement up to 200 kHz, with resolution of 10 Hz and accuracy of ±(3.0% + 15 digits).

Special functions include hFE testing for NPN/PNP transistors (0–1000 gain), diode test, and a built-in continuity buzzer. The instrument features input impedance of 10 MΩ, anti-shock protection, and auto-polarity display. It offers data hold, MAX value hold, and auto power-off after ~30 minutes of inactivity, with a low-battery indicator appearing below approximately 7.5 V. Sampling rate is approximately 3 readings per second, supporting efficient troubleshooting.

Ergonomically designed, the DM‑23 measures roughly 185 × 93 × 35 mm and weighs about 290 g (including battery), making it easy to handle and transport. Powered by a standard 9 V battery (6F22), it ships with test leads, a protective holster, and user manual, enabling immediate deployment.

This meter is engineered for reliable use in environments ranging from 0 to 40 °C with up to 80% non-condensing humidity, ensuring performance stability in typical workshop or field conditions. Storage conditions up to –10 °C to +60 °C further support device longevity.

Ideal applications include:

• Electrical testing and troubleshooting in residential, commercial, and workshop contexts

• Circuit diagnostics, component verification, and continuity checks

• Electronics design labs and educational settings requiring precise measurement

• HVAC control circuits, appliance repair, and maintenance tasks

• Testing diode, transistor elements, resistance, capacitance, and frequency components

Key Highlights:

• High-resolution 20,000-count display with manual range and backlight

• Comprehensive measurement coverage: DC/AC voltage (up to 1 kV/750 V), DC/AC current (up to 20 A), resistance (up to 200 MΩ), capacitance, frequency, diode, and hFE

• Excellent accuracy: ±0.05% on DC voltage, ±0.2% resistance, ±1.5% AC current

• Continuity buzzer, diode and transistor test capabilities

• User-enhancing lamps: Data Hold, MAX hold, auto power-off, low-battery alert

• Durable and portable: anti-shock design, IEC safety compliance, lightweight and compact

• Full accessory kit included—test leads, holster, battery, user manual

In summary, the HTC DM‑23 Digital Multimeter offers a perfect blend of precision, safety, and functionality in a handheld package. With high-resolution measurement, versatile multi-function capabilities, and rugged ergonomics, it serves as a dependable instrument for professionals, educators, and hobbyists alike. Its combination of accuracy, data features, and ease-of-use make it a standout choice for routine diagnostics, lab testing, and on-the-go troubleshooting.