I have limited experience with servos, but these seem to do exactly what they are described to do. They are much smaller than I expected, which will give lots of flexibility for where they are installed. I'm planning to try to automate the vents in my house to open and close based on which room I am in and the temperature. I connected them to my Arduino Nano and ESP32. There are libraries available for each that make it pretty simple to get going. I'm going to buy another package!