ATG-R01-32A/ATG-R01-40A matches NEMA 14-50P plug, If you have an available 240V NEMA 14-50 receptacle near where you park your electric car, you will likely not need any professional work — you can simply plug in, connect to WiFi, and get going.
ATG-R01-48A, which requires a professional electrician to permanently connect the charger to a home’s electrical system.