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 ...

LumenRadio has recently introduced a Wireless Modbus (W-Modbus) module built around Nordic Semiconductor’s nRF52840 SoC. The module can connect up to 100 nodes, integrates a power amplifier with 100mW ...

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 ...

The two universal Modbus modules connect CompactLogix controllers to any Modbus/TCP or Modbus serial networks from the same module, even at the same time. January 26, 2016 – Molex introduced two ...

modbus_relay listens on a FIFO pipe and when data is received, it will pulse Relay 1 and 2 simultaneously for 250 ms. This is used in conjunction with Home Assistant to actuate a 24VAC home doorbell ...