SKU: 69308864763

DUOYI Automobile Dual-hole Spark Plug Diagnostic Tester, DUOYI EU Plug

$12.59 $13.99
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Description

DUOYI Automobile Dual-hole Spark Plug Diagnostic Tester, DUOYI EU Plug1. Power adapter: Input 100 240V AC Output 12V 1A DC 2. Purpose: test spark plug performance and ignition strength 3. Application range: 12V gasoline engine automotive spark plugs 4. The dual hole automotive spark plug tester has two test holes, which can test two spark plugs at the same time. If you suspect that any spark plug is not working properly, you can do a comparative test to make an accurate judgment 5. Test principle: In the automotive


1. Power adapter: Input 100-240V AC / Output 12V 1A DC
2. Purpose: test spark plug performance and ignition strength
3. Application range: 12V gasoline engine automotive spark plugs
4. The dual-hole automotive spark plug tester has two test holes, which can test two spark plugs at the same time. If you suspect that any spark plug is not working properly, you can do a comparative test to make an accurate judgment
5. Test principle: In the automotive ignition system, the high-voltage ignition coil generates a high voltage (more than 10,000 volts), and the spark plug leads it to form a high-voltage ignition coil into the cylinder engine. The spark between the spark plug electrodes ignites the mixture. The detector can distinguish good spark plugs from bad spark plugs according to the intensity of the spark
6. Turn the key switch clockwise to turn on the tester, and the indicator light is green
7. Close the protective cover, insert the adapter into the side socket, and connect the tester to the power supply to turn it on
8. Turn the switch clockwise to adjust the operating frequency between 1000rpm and 6000rpm/min. The higher the frequency setting, the stronger the spark.
9. Dimensions: 145x85x60mm
10. Weight: 354g

Instructions for use of the automotive spark plug tester:
1. Turn off the power before placing the spark plug
2. The spark plug tester is a high-voltage detector. Do not touch the spark plug with your hands during operation to avoid danger

Packing list:
- Spark plug tester x 1
- Power adapter x 1
- User manual (English) x 1


Specification:
Package Weight
One Package Weight 0.40kgs / 0.89lb
One Package Size 10cm * 12cm * 15cm / 3.94inch * 4.72inch * 5.91inch
Qty per Carton 36
Carton Weight 18.00kgs / 39.68lb
Carton Size 64cm * 32cm * 45cm / 25.2inch * 12.6inch * 17.72inch
Loading Container 20GP: 289 cartons * 36 pcs = 10404 pcs
40HQ: 671 cartons * 36 pcs = 24156 pcs

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 69308864763

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Zane Potts
Houston, US
★★★★★ 4
Softer than expected
Size: Queen (Mid Loft), Number of Items: 1
Not as firm as I would like. Make sure you want a soft pillow if you choose this one. Seems high quality otherwise
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Reviewed in the United States on August 6, 2025
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ADKer
Massapequa, US
★★★★★ 5
Super comfortable and great neck support
Size: Queen (Mid Loft), Number of Items: 1
This pillow is super comfortable! It has support for the neck, which is so important so that my neck doesn’t end up creasing and cutting off your air. Great for side, sleepers or people that need a little bit more support. The height is about 5 inches- it appears firm, but it conforms to your neck shape and supports it. Great value for the money! I own four of them and guests finds them comfortable also
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Reviewed in the United States on June 1, 2026
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Amazon Customer
Phoenix, US
★★★★★ 5
Perfect Pillow
Size: Queen (Mid Loft), Number of Items: 1
This is the best pillow I’ve ever had! Supportive yet soft. Never goes flat. I’m a side sleeper and I have neck and shoulder pain and this pillow keeps my head and neck in alignment. I’m buying a set for our camper and our 2nd home so I can sleep comfortably wherever I go. Price point is spot on for the quality of pillow.
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Reviewed in the United States on July 23, 2025
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Tahoetech
Natrona Heights, US
★★★★★ 5
Soft pillow
Size: Queen (Low Loft), Number of Items: 1
Very good, very soft pillow.
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Reviewed in the United States on March 23, 2026
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moshe
Port Orchard, US
★★★★★ 5
Super comfy
Color: Soft, Size: Queen(28"×16"×5.9")
Absolutely love this pillow! It’s incredibly soft, supportive, and stays cool throughout the night. I’ve been sleeping much better since getting it. Great quality, perfect firmness, and definitely worth every penny.
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Reviewed in the United States on May 19, 2026

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