1PCS Magnetic Field Strength Detector, Magnet N/S Polarity Checker, Mini Handheld Gaussmeter Tester with LCD Screen
$18.25
Today it costs $18.25 on AliExpress. Since Oct 21, 2026, when we started tracking it, it ranged from $18.22 to $18.25. We haven't tracked it long enough yet to say whether it's on sale.
We have tracked this product for 1 day; confirming a drop takes at least 3 days. The store advertises "was $19.41", but that is the store's own claim; we only state discounts our price history proves.
View on AliExpressAffiliate link: we earn a commission on completed purchases, and the price is the same with or without our code. The price above is the last recorded reading, not a live checkout lookup.
Price history
Today$18.25highest ever seen
Lowest$18.22on Oct 21
Highest$18.25since Oct 21
Tracked since Oct 21 · 1 changeHover over the chart to see each price.Tap the chart to see each price.
See every price change
| When | Price | Change |
|---|---|---|
| Oct 21, 06:48 UTC | $18.25 | +0.2% |
| Oct 21, 02:50 UTC | $18.22 | start |
| Store | Shenzhen Module Studio Co., Ltd Store |
|---|---|
| Product rating | — |
| Store rating | — |
| AliExpress category | Electronic Components & Supplies › Active Components |
| Recorded readings | 2 |
| First seen | 10/21/2026 |
| Last reading | 10/22/2026, 6:41:19 PM UTC |