The Helios KWL-SL 4/3 is a 3‑meter ribbon cable equipped with RJ10 connectors on both ends, designed for use with the KWL-BEC comfort controller, CO2 sensors, mixed gas (VOC) sensors, humidity sensors, KNX/EIB modules, or extension modules. This cable provides reliable connectivity for accurate control and monitoring, ensuring efficient operation of Helios ventilation systems.