I am looking for a simple device to do the following, preferably in one device if one exists:
Poll one MODBUS register continously and depending on the value of this register open or close a relais.
I am looking for suggestions for which hardware to use. Obviously I am looking for a solution that does not cost to much but works reliably.
(e.g. using s small ESP32 board with a relais attached to an I/O pin would be very cheap, but it is not really a professional solution so this is not really and option for me, unless there is such a solution complete in a box that "just works"...).
Any suggestions?
Poll one MODBUS register continously and depending on the value of this register open or close a relais.
I am looking for suggestions for which hardware to use. Obviously I am looking for a solution that does not cost to much but works reliably.
(e.g. using s small ESP32 board with a relais attached to an I/O pin would be very cheap, but it is not really a professional solution so this is not really and option for me, unless there is such a solution complete in a box that "just works"...).
Any suggestions?