Box-2-Box: Relay control over LAN


Two I/O Controller units can be connected against each other over a LAN. Digital inputs are then connected over the network to relay outputs. The delay is approximately 200ms. With a remote LAN relay, it is possible to switch any device on or off.

Each unit can connect to the remote unit
When the power fails and is restored, the unit automatically retrieves input states from the remote unit
Uses a Telnet-like protocol with optional security enhancements