Teng Tools Digital Multimeter - 250V AC/DC Voltage Tester, Resistance and Temperature Meter with Test Leads - DM550
Measuring Instruments · DM550
Digital Multimeter
250V AC/DC Voltage Tester, Resistance and Temperature Meter with Test Leads
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Why this one
Voltage measurement
This instrument measures both AC and DC voltage up to 250V, letting you verify live circuits, check outlets, and troubleshoot automotive electrical systems with confidence.
Resistance range
Cover a wide span of resistance testing from 200 ohm through 2K, 20K, 200K, and all the way up to 20M ohm.
Temperature capability
Read temperatures from -40 degrees up to +1000 degrees, making this tool useful for HVAC diagnostics, engine sensor verification, and industrial maintenance tasks where thermal data matters.
Lightweight and portable
Weighing just 284 g (approximately 10 ounces), this meter rides comfortably in a tool pouch or shirt pocket without dragging you down during a long shift.
Complete with test leads
Ships with test leads ready to work straight out of the package.
Read the full description
Put dependable electrical measurement in your tool bag with this Teng Tools meter. Rated for 250V on both AC and DC circuits, it handles the everyday voltage checks that electricians, HVAC technicians, and automotive mechanics face on every job.
The resistance function spans five ranges — 200 ohm, 2K ohm, 20K ohm, 200K ohm, and 20M ohm — so you can verify continuity on short wire runs or measure high-impedance components without swapping instruments. When thermal diagnostics matter, the built-in temperature function reads from -40 degrees all the way to +1000 degrees, covering everything from freezer units to exhaust sensors.
A clear LCD screen and a straightforward rotary dial keep operation simple. Select your function, connect the included test leads, and read the result — no complicated menu trees to navigate while you are balanced on a ladder or reaching behind a dashboard.
At just 284 g (about 10 ounces), the meter is light enough to carry every day without noticing the extra weight. Whether you keep it in a belt pouch, a toolbox drawer, or a service cart, it is always ready when a circuit needs checking.
Teng Tools backs every instrument with the same commitment to quality that professional tradesmen expect from their hand tools. Add this meter to your everyday carry and stop borrowing one from the next bay over.
Get it in a set
This measuring instruments also comes in this set, with the tools that go with it.
Specifications
| Type | Service Tools |
|---|---|
| Category | Measuring Instruments |
| Part number | DM550 |
Data sheet
Full details from Teng Tools. Download PDF
Lifetime warranty
Send a photo and your order number. Same-day shipping on replacements.
Ships from Texas
From our Fort Worth warehouse.
Questions?
Call (817) 767-3392.
Shipping
Free shipping on orders over $99. Orders are stocked, picked and shipped from our warehouse in Fort Worth, Texas — orders placed on business days ship same-day wherever possible.
Lifetime warranty
Teng Tools hand tools are backed by a lifetime warranty against manufacturing defects. Screwdriver bits and socket bits are consumables and are guaranteed to meet dimensional standards. Torque wrenches and air tools can be serviced and recalibrated on request — contact us to arrange it.
Returns
Not right for the job? Contact us within 30 days of delivery and we'll sort out a return or exchange. Tools must be unused and in their original packaging. Warranty claims are handled separately — a defective tool is our problem, not yours.
Why Teng Tools?
Swedish Design Since 1985
Trusted in 30+ countries. Designed in Sweden, built to ISO and DIN standards.
Shipped Fast from Texas
US warehouse in Fort Worth, so orders move fast. TAA approved for government and defense.
Lifetime Warranty
Something goes wrong? Send a photo and your order number — same-day shipping on replacements.
The Devil Is in the Detail
Satin-finish wrenches, through-blade screwdrivers, heavy-gauge storage — built to last.