The EXTECH 381626 Pen Multimeter + Logic Probe is a handheld digital multimeter that offers a variety of test and measurement functions including resistance, DC voltage, DC current, AC voltage, diode test, and logic test. With its auto-ranging feature, this multimeter provides accurate readings for a range of electrical parameters. The compact and portable design makes it convenient for on-the-go use in various applications. This multimeter from Extech is a versatile tool for professionals in the field of electrical testing and measurement.