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Extech MD10 Non-Contact Magnet Detector with Built-in Flashlight

Extech MD10 Non-Contact Magnet Detector with Built-in Flashlight

Q: Will this detect a clippard miniature valve coil? or just large ones? i have no idea what magnetic field detection range: 63h, 98h, 401h, 810h is.

It should pick up clippards. However, the light that indicates a field is not very bright. I use it to check on the valves for my irrigation system. They are 24AC and not very powerful.

Q: Can this tool be used for magnetic field detection on watches?

I'm not exactally sure what you are asking. It will detect a magnetic field that might interfere with some watches. If that is not what you are asking please be more specific.

Q: Will this detect a neodymium magnetic field?

Of course, this tester will detect. It starts sensing not so strong magnet like neodymium one in the distance of ~15 cm.

Q: Can it detect GPS cases that use magnets under cars

Thank you so much for your interest in our products. The MD10 will detect magnetic fields if they are located in the available ranges of the unit (63, 98, 401, 810 Henry units). Also, it will have to be found in a short span of the source.

Product ID: 10170184

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Details

Brand
Extech
Power Source
Battery
Style
Non-contact
Color
Blue
Item Weight
20 Grams

🔋Low battery indicator

🔦Built-in bright flashlight

🧲Non-contact magnetic detection

Frequently Bought Together

Extech MD10 Non-Contact Magnet Detector with Built-in Flashlight

Solenoid Magnet, Solenoid Valve Magnet Tool #TLMKC, Solenoid Valve Troubleshooting Magnet Tool 18mm, Fits Most Industry Valves, 1 Pcs

Rotation Tester and AC Detector for Circulating Pumps etc

Description

🧲 Light up your magnetic insights—detect with confidence anytime, anywhere!

COMPACT PORTABLE - Slim, lightweight design with pocket clip for on-the-go professionals.
WIDE DETECTION RANGE - Sensitive to magnetic fields from 63H up to 810H for versatile applications.
ILLUMINATE YOUR WORKFLOW - Integrated bright blue LED flashlight ensures precision even in low-light environments.
STAY POWERED STAY READY - Includes low battery indicator and comes with 2 AAA batteries for immediate use.
EFFORTLESS MAGNETIC FIELD DETECTION - Detect AC, DC, and permanent magnets without any physical contact.

The Extech MD10 is a sleek, battery-powered non-contact magnet detector featuring a built-in bright blue LED flashlight and a wide magnetic detection range (63H to 810H). Designed for professionals testing speakers, relays, and solenoids, it offers visual magnetic field indication, a low battery alert, and a compact form factor with pocket clip—ready to perform in any lighting condition.

Specifications

Brand	Extech
Power Source	Battery Powered
Style	Non-contact Magnet Detector with Built-In Flashlight
Color	Blue
Item Weight	20 Grams
Item dimensions L x W x H	0.8 x 1 x 6.25 inches
UPC	793950330104
Manufacturer	Extech
Global Trade Identification Number	00793950330104
Part Number	MD10
Item Weight	0.705 ounces
Product Dimensions	0.8 x 1 x 6.25 inches
Country of Origin	China
Item model number	MD10
Batteries	2 AAA batteries required. (included)
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Number Of Pieces	1
Included Components	MD10
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Alkaline
Warranty Description	1 year

Have a Question? See What Others Asked

Will this detect a clippard miniature valve coil? or just large ones? i have no idea what magnetic field detection range: 63h, 98h, 401h, 810h is.

Can this tool be used for magnetic field detection on watches?

Will this detect a neodymium magnetic field?

Can it detect GPS cases that use magnets under cars

Reviews

J**L

It works perfect to test industrial solenoid valves

Works as described for industrial solenoid valves. Lost it, buying a replacement.

16.06.2025

D**E

Useful in plant diagnostics

I've just finished testing this.First off, I think it would be much nicer if there was a status LED to say that it's actually powered up, just because the battery could be dead and it would look the same.Others here are bothered by the momentary switch but that doesn't bother me and I like that it can't be left on. The flashlight, which is pretty good, is also a momentary switch.--- Everything I tested was at 24VDC ---Mine picks up MAC valves well, but doesn't see our SMC valves, like the SMC VQ4101 that we have a lot of here.Ice cube relays read well, but the tool has to be near the end with the coil so there's no dragging it across the top of a bank of relays in a panel. Fortunately it has the little flashlight to be able to look the relays over and identify the coil side.Contactors are a little sloppy, they read but trigger the tool from several inches which could lead to false alerts if several contractors are close together.Overall I think this tool is worth the asking price, not perfect, but it's usefulness is greater than the price so I'm doing 5 starsEdit: accidentally discovered the little cap that pulls off the back side and appears to do nothing has a magnet in it to verify the tool with!

17.08.2024

A**R

Amazon customer

Good quality

5.02.2025

M**T

Did not come with the batteries.

Said it would come with 2 AAA batteries but there were no batteries.

4.09.2024

J**B

great for checking electric trailer brakes.

I bought this to check the electric brakes on my camper. It works great. Pull the breakaway switch and look for the magnetic field on the brake drum. I couldn't be more easy.

19.09.2024

J**E

It works

Product works as it should. Flashlight is a nice touch.

27.07.2024

H**Z

Great tool!

Works great to find energized relays but unfortunately it can’t catch 5V relays.

14.03.2024

P**R

Great for checking relays

The media could not be loaded. Bought this for automotive diagnostics and so far it works great for many things, relays, electric pumps, solenoid valves. Etc.

2.03.2023