Product · United States

ESP32 Modbus RTU four-way relay module RS485 development board MODBUS protocol four-way optocoupler

Lowest price: $19.66 · 1 store · price range $19.66 … $19.66

Price history: 2 daily prices tracked since 2026-11-13; lowest $19.66, highest $19.66.

Price last confirmed by the store feed on 2026-11-12.

Prices across stores

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