If your EV Charger does not support OCPP, Killswitch will need to control the power supply to your EV charger using a Shelly® Smart Switch and a NO ("Normally Open") Contactor.
In this page you find the installation guide for the Shelly® Smart Switch - to be used with a power Contactor together with your EV Charger:
warningImportant: the installation of EV chargers, smart switches, contactors or any other electrical appliances should be made by certified professionals to avoid electrical shocks and injuries! Please ask an accredited electrician for your EV Charger and smart switch installation.