Hi Alexander! Great choice with the Apollo SA5000-210. For installation, start by mounting the detector on a flat surface, ideally on the ceiling for optimal coverage. Ensure the wiring is done correctly, following the provided manual. Make sure to connect it to the appropriate power source and double-check the compatibility with your existing system. Test the detector after installation to ensure it’s functioning correctly. If you encounter any specific issues during the process, feel free to ask for more detailed assistance. Good luck!