Caution: Disconnect power from the control board before beginning any wiring.
Any existing wires must be left connected and if the SOLO KIT connection uses the same contact as other wires, the new wires must be added to those already present in the same contact.
This specific control unit model does not have power for external accessories (like the SOLO KIT), so the use of an external power supply will be necessary.
Any power supply with a voltage between 12 and 24V, both AC and DC, can be used, or the following:
https://www.1control.eu/ecommerce/en-gb/1control-solo-kit-power-supply.php