{"title":"Industrial 8-Channel Digital Input & Output Module (Modbus RTU)","handle":"industrial-8-channel-digital-input-output-module-modbus-rtu","url":"/products/industrial-8-channel-digital-input-output-module-modbus-rtu","description":"An RS485-controlled industrial I/O module with 8 isolated digital inputs and 8 open-drain digital outputs, communicating via the Modbus RTU protocol. Multiple protection layers — power isolation, magnetic isolation, TVS diode, and resettable fuse — ensure stable and reliable operation in demanding environments.\n\nThe rail-mount ABS enclosure supports easy installation and stacking for expanded systems. Compatible with Raspberry Pi, Arduino, and STM32 via RS485 CAN HATs or shields.\n\nKey Features\n\n\nRS485 Modbus RTU – Configurable addresses (1–255) with cascading support\n\n8 Digital Inputs – 5–36 V, passive/active, NPN/PNP, optocoupler-isolated\n\n8 Digital Outputs – Open-drain with Darlington transistors, up to 500 mA sinking per channel\n\nDI/DO Linkage – Input-to-output linking and toggle control via Modbus commands\n\nFlash On/Off – Timed output control with built-in flyback diode protection\n\nMulti-Layer Protection – Power isolation, magnetic isolation, TVS diode, resettable fuse, and ESD protection\n\nLED Indicators – STA (MCU status), TXD, RXD, plus individual input/output status LEDs\n\nRail-Mount Enclosure – Industrial ABS housing, stackable for expansion\n\n\nSpecifications\n\n\nPower Supply – 7–36 V DC\n\nCommunication – RS485 (Modbus RTU)\n\nBaud Rate Options – 4 800, 9 600, 19 200, 38 400, 57 600, 115 200, 128 000, 256 000 (default: 9 600, N, 8, 1)\n\nDigital Inputs – 8 channels, 5–36 V\n\nDigital Outputs – 8 channels, 5–36 V, max 500 mA per channel\n\nAddress Range – 1–255\n\n\nCompatibility\n\n\nRaspberry Pi – Via RS485 CAN HAT (Python)\n\nSTM32 – Via RS485 CAN Shield (C)\n\nArduino – Via RS485 CAN Shield (Arduino IDE)\n\nPC – Windows, Mac, Linux, and Android via FTDI-based USB-to-RS485 adaptor\n\n\nIdeal For\n\nIndustrial automation and process control\nSmart home relay and actuator control\nRemote monitoring and data acquisition\nMulti-node RS485 sensor/actuator networks\n\n\nResources\n\nWaveshare Wiki – Modbus RTU IO 8CH\n","vendor":"Waveshare","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":617,"title":"Default Title","sku":"WS-26244","price":49.25,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":101,"option1":"Default Title"}]}