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.

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.

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.

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.

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Extech MD10 Non-Contact Magnet Detector Pen with Built-in Flashlight - Magnetic Field Tester for Solenoid Valves, Relays, and Coils - HVAC, Automotive, and Industrial Diagnostic Tool

Extech MD10 Non-Contact Magnet Detector Pen with Built-in Flashlight - Magnetic Field Tester for Solenoid Valves, Relays, and Coils - HVAC, Automotive, and Industrial Diagnostic Tool

Product ID: 10170184

Details

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

🔦Built-in bright LED flashlight

🔵Instant magnetic detection

🖊️Compact pen-style design

HK$509

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hong Kong.

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Description

🛠️ Detect. Illuminate. Dominate your diagnostics like a pro.

COMPACT PORTABLE - Lightweight pen-style design with sturdy clip keeps your essential tool always within reach.
NON CONTACT SAFETY - Detect magnetic fields through plastic enclosures to minimize electrical shock risk on the job.
BUILT IN LED FLASHLIGHT - Illuminate dark, cramped spaces effortlessly for safer, more efficient diagnostics.
VERSATILE INDUSTRIAL USE - Perfect for troubleshooting solenoid valves, relays, coils across HVAC, automotive, and industrial systems.
INSTANT MAGNETIC FIELD DETECTION - Quickly identify live magnetic fields with a bright blue LED indicator—no contact needed.

The Extech MD10 is a pocket-sized, battery-powered magnet detector pen that instantly signals magnetic fields with a bright blue LED. Designed for professionals in HVAC, automotive, and industrial maintenance, it features a built-in white LED flashlight for dark environments and a non-contact sensor to ensure safety. Its compact, ergonomic design with a sturdy clip makes it an indispensable tool for fast, reliable magnetic field testing and troubleshooting.

Specifications

ASIN	B00M9AX6AK
Best Sellers Rank	#118,596 in Automotive ( See Top 100 in Automotive ) #1,597 in Diagnostic, Test & Measurement Tools
Brand Name	Extech
Color	Blue
Customer Reviews	4.5 4.5 out of 5 stars (481)
EU Spare Part Availability Duration	2 years
Global Trade Identification Number	00793950330104
Included Components	MD10
Item Dimensions	0.8 x 1 x 6.25 inches
Item Weight	20 g
Manufacturer	Extech
Measurement Type	Magnetometer
Model	MD10
Number of Items	1
Number of Packs	1
Part Number	MD10
Power Source	Battery Powered
Style Name	Non-contact Magnet Detector with Built-In Flashlight
UPC	793950330104
Unit Count	1 Count
Warranty Description	1 year

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The delivery time was excellent, and the packaging was secure.

2 months ago

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Excellent communication throughout the order process. Product is perfect.

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HK$509

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hong Kong.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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