PTM535 RF Module EnOcean PTM535 RF Module empowers the seamless integration of energy-harvesting wireless switches and push buttons into EnOcean systems. The EnOcean PTM535 is engineered to be powered by the EnOcean ECO 200 energy harvester, paving the way for a sustainable and self-sufficient solution. Connecting these two is easy, as the ECO 200 can establish a mechanical bond through two contact pairs or be wired to the electrical interface of the PTM535.