The SYSTEMLEX System Control Module eliminates the tedious and complex wiring tasks associated with a modern central heating system. SYSTEMLEX links all the electrical components in a simple and efficient way. Built-in LED for boiler or zone indication or fault-finding. SYSTEMLEX does all the complicated cross-wiring for the installer- all that is left is to connect the centre to the board.
Popular wiring schematics can be found here https://www.systemlink.ie/schematics.html
Please allow 2-3 days for delivery.