CW122B-RR is a module designed for remote relay control, featuring two digital inputs and two relay outputs, each with both normally open and normally closed contacts.
To establish remote relay control, a pair of devices is required, with one operating in 'client' mode and the other in 'server' mode.
In this client-server model, the 'client' device periodically transmits the status of its digital inputs to the 'server.' In response, the 'server' conveys its digital input status.
This client-server approach offers various configurations: