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The 24 best-selling detector on AliExpress

We picked 24 detector from AliExpress with real orders and good reviews. Prices go from CHF 1.59 to CHF 80.99, the average rating is 4.8 stars and the most popular one has 53.2k orders. Every product opens on AliExpress, where you pay with buyer protection.

Updated: 2026-11

  1. 1Non-Contact Voltage Detector Pen 12-1000V AC Tester, Live Wire Breakpoint Finder, Electric-57%Non-Contact Voltage Detector Pen 12-1000V AC Tester, Live Wire Breakpoint Finder, Electrical OutletCHF 3.44 CHF 8.00★ 4.9 · 53.2k soldView on AliExpress →
  2. 2MUFASHA Non-Contact Voltage Detector Electrical Pen AC Voltage Tester Smart Breakpoint Fin-58%MUFASHA Non-Contact Voltage Detector Electrical Pen AC Voltage Tester Smart Breakpoint Finder 12-100CHF 3.95 CHF 9.44★ 4.7 · 48k soldView on AliExpress →
  3. 3Universal Battery Tester ANENG BT173 Battery Detector Test C D AA AAA N 9V Cell Button Met-50%Universal Battery Tester ANENG BT173 Battery Detector Test C D AA AAA N 9V Cell Button Meter Visual Display TeCHF 3.94 CHF 7.88★ 4.8 · 26.8k soldView on AliExpress →
  4. 4ANENG 11-25V Relay Detector RT01 Digital Universal 4/5 Pins Car Battery Vehicle Detection-58%ANENG 11-25V Relay Detector RT01 Digital Universal 4/5 Pins Car Battery Vehicle DetectionCHF 7.82 CHF 18.45★ 4.7 · 10.1k soldView on AliExpress →
  5. 5ANENG B16 Lntelligent Sensing Digital Measuring Pen Non-Contact 12V-300V Voltage Detector -57%ANENG B16 Lntelligent Sensing Digital Measuring Pen Non-Contact 12V-300V Voltage Detector NCV VoltagCHF 3.61 CHF 8.30★ 4.8 · 9.7k soldView on AliExpress →
  6. 6KONNWEI MAXOBD Bluetooth OBD2 Scanner Auto Engine Code Reader Car Diagnostic Detector Supp-57%KONNWEI MAXOBD Bluetooth OBD2 Scanner Auto Engine Code Reader Car Diagnostic Detector SuppCHF 13.21 CHF 31.01★ 4.9 · 4.3k soldView on AliExpress →
  7. 7AITHEA USB Rechargeable PIR Motion Sensor LED Bar Lights Dimmable Detector Night Light Por-73%AITHEA USB Rechargeable PIR Motion Sensor LED Bar Lights Dimmable Detector Night Light PorCHF 2.27 CHF 8.48★ 4.5 · 4k soldView on AliExpress →
  8. 8OBD2 Scanner ELM327 Car Diagnostic Detector Code Reader Tool V1.5 WIFI Bluetooth OBD 2 for-56%OBD2 Scanner ELM327 Car Diagnostic Detector Code Reader Tool V1.5 WIFI Bluetooth OBD 2 forCHF 3.28 CHF 7.40★ 4.9 · 3.5k soldView on AliExpress →
  9. 9Bluetooth ELM327 OBD2 Car Code Reader Scanner V1.5 Fault Detector Check Engine Automotive-67%Bluetooth ELM327 OBD2 Car Code Reader Scanner V1.5 Fault Detector Check Engine AutomotiveCHF 2.43 CHF 7.34★ 4.9 · 3.3k soldView on AliExpress →
  10. 10Relay Detector 11-25V ANENG RT01 Digital Universal 4/5 Pins Car Battery Vehicle Detection-58%Relay Detector 11-25V ANENG RT01 Digital Universal 4/5 Pins Car Battery Vehicle DetectionCHF 8.79 CHF 20.72★ 4.7 · 3k soldView on AliExpress →
  11. 111PC Brake Fluid Tester High Precision Portable Use Safety Quality Assurance OBD2 Brake Oil-58%1PC Brake Fluid Tester High Precision Portable Use Safety Quality Assurance OBD2 Brake Oil DetectorCHF 3.78 CHF 9.02★ 4.8 · 2.8k soldView on AliExpress →
  12. 12ALIENTEK USB Tester C2 Digital Voltmeter Charging Power Detector PD3.2 Battery Tester Fast-50%ALIENTEK USB Tester C2 Digital Voltmeter Charging Power Detector PD3.2 Battery Tester Fast Charge Detection TrCHF 26.94 CHF 53.44★ 4.9 · 2.1k soldView on AliExpress →
  13. 13Propane Butane Sensor 12V Gas Detector Sensor Alarm LPG Natural Motor Home Camper Marine L-60%Propane Butane Sensor 12V Gas Detector Sensor Alarm LPG Natural Motor Home Camper Marine LCHF 6.48 CHF 16.40★ 4.9 · 2k soldView on AliExpress →
  14. 14HT5009 Brake Fluid Tester Digital Auto Brake Liquid Oil Detector Tool-57%HT5009 Brake Fluid Tester Digital Auto Brake Liquid Oil Detector ToolCHF 13.04 CHF 30.62★ 4.9 · 1.9k soldView on AliExpress →
  15. 15ANENG RT01 Relay Tester Aermotor 11-25V Car Battery Voltage Detector LED Indicator Light A-55%ANENG RT01 Relay Tester Aermotor 11-25V Car Battery Voltage Detector LED Indicator Light ACHF 8.85 CHF 19.53★ 4.6 · 1.2k soldView on AliExpress →
  16. 16Digital refrigeration pressure gauge, air conditioning temperature detector, multi-functio-53%Digital refrigeration pressure gauge, air conditioning temperature detector, multi-function vacuum pressure teCHF 80.99 CHF 172★ 4.7 · 1.1k soldView on AliExpress →
  17. 17Wireless Sonar Fishing Alert Fish Finder Underwater Echo Sounder Fishing Detector Portable-57%Wireless Sonar Fishing Alert Fish Finder Underwater Echo Sounder Fishing Detector Portable Fish FinderCHF 50.30 CHF 117★ 4.7 · 865 soldView on AliExpress →
  18. 18KONNWEI BK300 Lead Acid Starting Car Battery Detector 12V 24V Capacity Resistance Bluetoot-53%KONNWEI BK300 Lead Acid Starting Car Battery Detector 12V 24V Capacity Resistance BluetootCHF 13.19 CHF 28.06★ 4.6 · 717 soldView on AliExpress →
  19. 19Multifunctional Handheld Metal Detector Stud Wood Finder Electronic Measuring Instrument E-54%Multifunctional Handheld Metal Detector Stud Wood Finder Electronic Measuring Instrument Electronic WallCHF 6.72 CHF 14.60★ 4.5 · 695 soldView on AliExpress →
  20. 203 in 1 Wall Metal Detector Depth Professional Find Metal Wood Studs AC Voltage Live Wire D-50%3 in 1 Wall Metal Detector Depth Professional Find Metal Wood Studs AC Voltage Live Wire Detect Wall ScannerCHF 15.03 CHF 30.07★ 4.9 · 635 soldView on AliExpress →
  21. 21Fish Tank Thermometer LCD Digital Aquarium Temperature Water Meter Aquarium Temp Detector Fish Tank Thermometer LCD Digital Aquarium Temperature Water Meter Aquarium Temp Detector Fish Alarm PetCHF 2.61★ 4.5 · 567 soldView on AliExpress →
  22. 22SEAMETAL Car Vehicle Motor Tire Pressure Pen Detector Air Pressure 5-50PSI Mini Test Meter-61%SEAMETAL Car Vehicle Motor Tire Pressure Pen Detector Air Pressure 5-50PSI Mini Test MeterCHF 1.59 CHF 4.06★ 4.6 · 560 soldView on AliExpress →
  23. 23ANENG BF01 Brake Fluid Tester Oil Quality Check Detector Universal Brake Liquid Digital Ve-58%ANENG BF01 Brake Fluid Tester Oil Quality Check Detector Universal Brake Liquid Digital Vehicle AutoCHF 12.54 CHF 29.52★ 4.9 · 479 soldView on AliExpress →
  24. 24Launch X431 I-TPMS Tire Pressure Detector Tool, Relearn, Reset and Coding TPMS Sensors, Wo-7%Launch X431 I-TPMS Tire Pressure Detector Tool, Relearn, Reset and Coding TPMS Sensors, Work with CRCHF 59.10 CHF 63.31★ 4.8 · 349 soldView on AliExpress →

Quick picks

Most popularNon-Contact Voltage Detector Pen 12-1000V AC Tester, Live Wire Breakpoint FinderCHF 3.44 · ★ 4.9 · 53.2k soldBest ratedCar Battery Leakage Detector Parasitic Battery Drain Tester with Fuse Safe No-DiCHF 6.38 · ★ 5.0 · 236 soldCheapest well ratedSEAMETAL Car Vehicle Motor Tire Pressure Pen Detector Air Pressure 5-50PSI Mini CHF 1.59 · ★ 4.6 · 560 soldBiggest discountAITHEA USB Rechargeable PIR Motion Sensor LED Bar Lights Dimmable Detector NightCHF 2.27 · ★ 4.5 · 4k sold

How much to pay

Tip: read the latest buyer photos on AliExpress and check the size or model before you order. Products with many orders and a rating of 4.7 or more are usually the safest choice.

Questions

What is the best-selling detector?

The most popular one is "Non-Contact Voltage Detector Pen 12-1000V AC Tester, Live Wire Breakpoint Finder, Electrical Outlet", with 53.2k orders.

How much does a detector cost?

In this list prices go from CHF 1.59 to CHF 217; half of them cost less than CHF 13.21.

Which detector has the best reviews?

"Car Battery Leakage Detector Parasitic Battery Drain Tester with Fuse Safe No-Disconnect Current Leak Finder" has an average of 5.0 stars with many orders.

Are there discounts?

Yes. On average these products are 47% below their original price on AliExpress. Prices change often.

Prices and ratings come from AliExpress and can change. We may earn a commission when you buy through our links, at no extra cost to you.

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