As an important place for religious activities such as prayer, many churches have renovated their internal environment to a certain extent in recent years. In addition to the renovation of the church environment, a lot of high-tech equipment, such as LED screens, have been introduced, which helps to create a better church environment for the church population, and also saves a certain amount of time and energy for the church staff. Figure 1 shows the R5 case from a church in New York, USA, and Figure 2 shows the FS series from a church in Italy.
