I recently embarked on an exciting project to integrate my Gira SPS switches into my Homematic setup. The goal was to enhance my home automation by adding motion sensor-triggered lighting. The journey has been both challenging and rewarding, and I’d love to share my experience with the community.First, I wanted to ensure that my Gira SPS switches could seamlessly integrate with the Homematic system. After some research, I decided to use the HomeMatic Wired RS485 I/O-Modul. This module seemed perfect for my needs, especially since it allows for both input and output configurations. I planned to use it to control the LED backlighting of my switches, which I wanted to be motion sensor-triggered.The setup involved categorizing my switches into groups, each with its own motion sensor. This way, the lights would automatically turn on in the evening and stay on until 11 PM. After that, only motion in the ground or upper floors would activate the lights. I was curious if the I/O-Modul 12 Eingänge 14 Ausgänge would be sufficient for this configuration. The module’s open-collector outputs support 24V, which aligns perfectly with my setup. I also wanted to ensure that I could program it to meet my specific needs without interfering with my existing wiring.One of the key considerations was ensuring that the module wouldn’t interfere with my current system. I already have a 24V 4.2A power supply in place, which I hoped would be sufficient. I also wanted to make sure that the new setup wouldn’t cause any overvoltage issues, so I made sure to include an overvoltage protection module.The installation process was smooth, and I was impressed by how well the Gira SPS switches performed once integrated. The motion sensors worked flawlessly, and the LED backlighting added a nice touch to the overall ambiance. I was also pleased with how the system handled the transition from day to night, ensuring that the lights came on at the right time without any hiccups.One thing I particularly appreciated was the flexibility of the I/O-Modul. It allowed me to configure the system exactly as I wanted, without any restrictions. I was also able to read my energy meters through the module’s inputs, which added an extra layer of functionality to my setup.Overall, this project has been a great learning experience. It reinforced my belief in the power of integrating different smart home components to create a cohesive and functional system. I’m now looking forward to exploring more advanced configurations and possibly integrating even more devices in the future.If anyone has tips or experiences to share on similar setups, I’d love to hear them! Happy automating everyone!