Digital Multimeter w/USB Connector

The MT-1820N is a multifunction digital multimeter that can connect to a computer. It provides true-RMS measurement, a maximum display count of 5999, a 61-segment simulated analog scale, and USB data output. In addition to on-site electrical testing, it is suitable for users who need to save measurement records, prepare laboratory reports, or observe changes in readings over time.

The MT-1820N is suitable for electronics and electrical engineering students, laboratories, equipment maintenance, and technicians who need to monitor data for extended periods. It can perform common voltage, current, capacitance, diode, continuity, and non-contact voltage detection tasks, and can transfer measurement data to a computer for subsequent organization and analysis.

The MT-1820N connects to a computer through a USB Type-C data cable and outputs measurement data using the driver and software available from the official website. Before first use, install the appropriate software version, confirm that the computer recognizes the device, and then enable data transmission to begin recording.

True-RMS measurement provides more accurate readings for non-sinusoidal AC signals, such as those from variable-frequency equipment, dimming controls, or certain electronic power supplies. Compared with meters that calculate readings from an average value, a true-RMS meter generally provides more meaningful results when measuring distorted AC waveforms.

The 5999-count maximum display provides finer numerical resolution, while the 61-segment simulated analog scale quickly shows whether a reading is rising, falling, or fluctuating. When making adjustments, locating intermittent contact, or observing continuous changes, the numerical reading and bar scale complement each other.

The MT-1820N supports common electronics and electrical repair measurements, including voltage, current, capacitance, diode testing, continuity, and non-contact voltage detection. Before measuring, select the correct function, input jack, and settings according to the manual. In particular, never use the current range and voltage range interchangeably.

No. NCV is useful for an initial check of whether an AC electric field may be present near a wire or outlet without directly touching an exposed conductor. However, it is only a quick screening function and cannot replace confirmation of the actual voltage with test leads. Before formal repair work, follow the applicable safety procedure, perform further measurements, and disconnect power.

Automatic power-off reduces battery consumption after the meter has not been operated for a period of time, which is useful for teaching, maintenance, or intermittent measurements. For long-term data logging, first check the automatic power-off setting in the manual to prevent recording from being interrupted when the meter enters a power-saving state.

The official website provides Chinese and English software and user manuals for the MT-1820N. Install the driver and software that match the computer system before connecting the USB Type-C data cable. If the connection fails, check the port, driver, cable, and software settings in that order.

Before measuring, confirm the rotary-switch position, test-lead jack, and expected range. Never connect the meter directly across a voltage source while a lead is plugged into a current input. When working on energized equipment, follow applicable electrical safety requirements, use approved personal protective equipment, and stay within the rated limits shown on the product nameplate and in the manual.

The sampling rate is approximately 3 readings per second.
The original data storage capacity is up to 2,000 records. After updating to the dedicated software, the number of stored records is unlimited.

After the meter is powered on, it will automatically shut down if there is no operation for approximately 14 minutes.
To temporarily disable the auto power-off function, press and hold the “SELECT” button while turning on the meter. Auto power-off will remain disabled for that session.