Electronics · United States

B29C-4X R421C32 DC12V 32 Channels Modbus RTU RS485 Bus Relay Module UART Serial Port Board For PLC LED Home Door Lock

Lowest price: $204.66 · 1 store · price range $324.85 … $324.85 · 37% off the list price

Price history: 3 daily prices tracked since 2026-10-18; lowest $201.41, highest $204.66.

Price last confirmed by the store feed on 2026-10-30.

B29C-4X R421C32 DC12V 32 Channels Modbus RTU RS485 Bus Relay Module UART Serial Port Board For PLC LED Home Door Lock

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Store 1 (US)$204.66In stockGo to store

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