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24 cheapest detector on AliExpress

We picked 24 detector from AliExpress with real orders and good reviews. Prices go from CHF 1.59 to CHF 8.85, 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. 1-61%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 →
2. 2-73%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 →
3. 3-67%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 →
4. 4Fish Tank Thermometer Aquarium Adsorbable Digital Display Temperature Detector LCD Screen Display CelsiusCHF 2.54★ 4.6 · 75 soldView on AliExpress →
5. 5Fish Tank Thermometer LCD Digital Aquarium Temperature Water Meter Aquarium Temp Detector Fish Alarm PetCHF 2.61★ 4.5 · 567 soldView on AliExpress →
6. 6-65%Diffuse Glass CO2 Drop Checker Aquarium Hang On CO2 Monitor Sensor Detector IndicatorCHF 2.71 CHF 7.68★ 4.5 · 192 soldView on AliExpress →
7. 7-56%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 →
8. 8-57%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 →
9. 9-57%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 →
10. 10-65%Car Battery Relay 11-25V Detector Digital Universal Kit ANENG RT01+BT138 Battery Level Tester PortableCHF 3.75 CHF 10.85★ 5.0 · 20 soldView on AliExpress →
11. 11-53%OBD2 Scanner ELM327 Car Diagnostic Detector Code Reader Tool V1.5 WIFI Bluetooth OBD 2CHF 3.76 CHF 8.08★ 5.0 · 34 soldView on AliExpress →
12. 12-58%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 →
13. 13-50%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 →
14. 14-58%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 →
15. 15-50%Diagnostic Instrument Android Windows ELM327 OBD2 V2.1 Bluetooth/WIFI Car Detector DCHF 4.09 CHF 8.17★ 4.9 · 175 soldView on AliExpress →
16. 16-54%Car Battery Leakage Detector Parasitic Battery Drain Tester with Fuse Safe No-Disconnect Current Leak FinderCHF 6.38 CHF 13.99★ 5.0 · 236 soldView on AliExpress →
17. 17-60%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 →
18. 18-54%Multifunctional Handheld Metal Detector Stud Wood Finder Electronic Measuring Instrument Electronic WallCHF 6.72 CHF 14.60★ 4.5 · 695 soldView on AliExpress →
19. 19-55%Electronic Stud Finder Wall Scanner, Wood & Metal Detector, 20mm Deep Detection Sensor with LED Light AudibleCHF 6.76 CHF 15.05★ 5.0 · 36 soldView on AliExpress →
20. 20-53%High Precision 100Psi Car Tyre Pressure Gauge Long Hose Tire Meter DetectorCHF 7.00 CHF 14.90★ 4.6 · 213 soldView on AliExpress →
21. 21-58%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 →
22. 22-43%Magnetic Wall Stud Finder Spirit Level Strong Magnetic Stud Sensor Magnet DetectorCHF 8.78 CHF 15.34★ 5.0 · 14 soldView on AliExpress →
23. 23-58%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 →
24. 24-55%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 →

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