How does a digital multimeter benefit a technician?

A digital multimeter is an invaluable tool for technicians because it allows for the testing of multiple electrical parameters. This includes measuring voltage, current, and resistance, among others. The versatility of a digital multimeter means that a technician can perform various tests with a single device, increasing efficiency and reducing the need for multiple tools. This capability streamlines troubleshooting and diagnostics, as the technician can quickly switch between measurements without needing to set up different instruments for each type of test.

The other choices highlight aspects that, while relevant to electrical work, do not capture the primary advantage of a digital multimeter. Simplifying wire connections pertains more to the physical setup of electrical systems rather than measurement. While visual displays can be useful for circuit analysis, they are not a primary function of a multimeter. Improving circuit insulation is a separate concern that relates to the integrity and safety of electrical systems rather than the measurement capabilities that a digital multimeter offers.