Here's an overview:

Features:

Display: The DT830B features a digital LCD (Liquid Crystal Display) screen that shows the measured values clearly.

Measurement Functions: It typically offers various measurement functions, including voltage (AC and DC), current (AC and DC), resistance, and sometimes continuity and diode testing.

Range Selection: It allows manual selection of measurement ranges to ensure accurate readings for different magnitudes of electrical parameters.

Function Selection: The multimeter typically has a rotary switch or buttons to select the desired measurement function (e.g., voltage, current, resistance).

Input Jacks: There are input jacks or sockets for connecting the test leads. These jacks are usually color-coded (red for positive, black for negative) and marked with the corresponding measurement function.

Hold Function: Some models may include a data hold function that freezes the display to capture and record the measured value.

Battery: The multimeter is powered by batteries, often a standard 9V battery, which needs to be replaced periodically.

Safety: Basic safety features such as overload protection and fused current input are often incorporated to protect both the multimeter and the user.