I bought it for wireless control of 10 RGB E27 bulbs located in the same room. EXCELLENT. Through scenes, you can program up to 18 functions. 6 switches X 3 functions for each switch (one press, two presses, long press). Also, it does not require wifi because communication with the bulbs is done via Bluetooth. These specific bulbs are ideal because they support this switch 100%. Sonoff claims it has a range of up to 90 meters; I cannot confirm this as I use it within the same space. For 10 euros, it is an excellent purchase for wireless control WITHOUT needing to constantly turn your phone on and off. It becomes tiring at times with the phone. I have it on the table as a remote control. I also made my own stickers on the PC with white designs to look better in the dark. Its stickers were with black designs that do not show well. When I enter/exit the room, I turn the bulbs on/off from the physical wall switch. Of course, when I turn off the power from the physical switch, the R5 does not work. I give it 5/5 excellent purchase and excellent functionality.