8 Channel Optocoupler Isolation Module Signal Voltage Converter PNP NPN Low High Level Output AC 110V 220V DC 3.3V 5V 12V 24V
Quick answer
Is $3.89 a good price for 8 Channel Optocoupler Isolation Module Signal Voltage Converter PNP…?
Yes: at $3.89 it is 11% below the typical price of $4.35 that DipScout measured over the last 11 days, a real drop. Tracked since Oct 22, 2026, it ranged from $3.89 to $4.35.
$3.89
Today it costs $3.89 on AliExpress. Since Oct 22, 2026, when we started tracking it, it ranged from $3.89 to $4.35. It is 11% below the typical price of $4.35 that we measured: a real drop.
You save $0.46 · was $4.35
Drop detected on .
Drop confirmed by our price history: we tracked the price over the last 11 days and the typical price (time-weighted median) was $4.35.
View on AliExpressThe price above is the last recorded reading, not a live checkout lookup.
Price history
Today$3.89↓ 11% below typical
Lowest$3.89since Nov 2
Highest$4.35Oct 22 to Nov 2
typical price: median of the last 14 daysTracked since Oct 22 · 1 changeHover over the chart to see each price.Tap the chart to see each price.
See every price change
| When | Price | Change |
|---|---|---|
| Nov 2, 10:06 UTC | $3.89 | −11% |
| Oct 22, 15:42 UTC | $4.35 | start |
| Store | e_goto Processors Store |
|---|---|
| Product rating | — |
| Store rating | — |
| AliExpress category | Electronic Components & Supplies › Active Components |
| Recorded readings | 2 |
| First seen | |
| Last reading |