Welcome to my quick review of an inexpensive 2-channel 5V relay module controlled via RS485 bus utilizing Modbus RTU protocol. As claimed by some online sellers, this easy-to-get Modbus RTU 2-Channel ...

23IO Modbus RTU Python Library for eletechsup PNP and NPN relay modules. Specification for RS485 comms can be found here https://485io.com/eletechsup/23IOA08_23IOB16 ...

The Espressif NodeMCU-based module described in this series enables you to use the Modbus protocol over a WLAN. Now we cover the software and Modbus module configuration. In the first part of this ...

The Anybus E300 Modbus TCP Communication Module helps expand markets and applications for the E300 Overload Protection Relay. Add this to your toolbox in order to close more business where Modbus TCP ...

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