Digital Multimeters feature built-in voltage detection.

Press Release Summary:

Designed with non-contact ac voltage detection, Series 300 is suited for electrical troubleshooting. Auto ranging Model EX330 provides 4,000 count display and includes measurements for temperature, capacitance, frequency, and duty cycle. All models measure dc/ac voltage with 0.5% basic accuracy along with dc/ac current and resistance. Auto-ranging Model EX320 and manual-ranging Model EX310 each have 2,000 count display. All include low battery indicator, auto power off, and data hold.

Original Press Release:

Extech Instruments Announces New 300 Series of Compact Multi-Function Digital Multimeters

Built-in Non-Contact AC Voltage Detection extends Extech's Innovative Brand
Extech Instruments, a leading brand of test and measurement equipment for the industrial marketplace, announces its new 300 Series of Digital MultiMeters featuring built-in Voltage Detection. Easy-to-operate and conveniently-sized, Extech's 300 Series is ideal for electrical trouble shooting by combining two meters in one. Featuring a non-contact voltage detector combined with a fully featured digital multimeter the user can quickly and conveniently check for voltage prior to attaching the multimeter's test leads to the device under test.

Extech's 300 Series includes three models: the EX310, EX320 and EX330, all with built-in voltage detection. This line supplements Extech's 400 series of DMM's which feature a built-in, non-contact, InfraRed (IR) Temperature measurement capability.

Small in size, but big in features the auto ranging EX33O leads the 300 series with a big digit 4000 count display and includes measurements for Temperature, Capacitance, Frequency and Duty Cycle. All models measure DC/AC Voltage with a 0.5 percent basic accuracy along with DC/AC Current and Resistance. Each will perform Diode Test, has an audible beeper for Continuity Test and includes a low battery indicator, Auto Power Off function and Data Hold to "freeze" a reading on the display. The EX320 is auto-ranging, the EX310 is manual-ranging, and each has a 2000 count display.
The 300 Series meters comes complete with stand, test leads, protective holster, and batteries. The EX330 also includes a bead wire temperature probe.

About Extech Instruments
Headquartered in Waltham, Massachusetts, Extech Instruments is one of the largest suppliers of test and measurement equipment worldwide. Founded in 1971, Extech is known for its depth and breadth of products and its innovation in providing instruments with unique combinations of features that make them highly useful and very convenient. All Extech meters are distributed worldwide through leading representatives, distributors and OEMs. The company is ISO 9001 2000 certified.

For further information about Extech Instruments and its products, call 781-890-7440 or visit

Please send all sales leads to Peter Harper, Marketing Communications Manager, Extech Instruments. 285 Bear Hill Rd., Waltham, MA 02451 USA; Phone: 781-890-7440; Fax: 781-890-7864; Email:

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