I need a device that will ensure the load control

Of course, when you have not yet had such a machine, it will be very difficult to immediately understand its features. Look at least at level 2 car charger , and you will immediately understand that this system can be trusted. The fact is that it has been designed with all the features in mind, and you will be happy to be part of this large family of electric charges. So don't be afraid of anything. and just enjoy the achievements of modern technology.