The HALO 2C Smart Sensor is very easy to install. It mounts in ceiling with a 5-inch (12.7 cm) circular opening and a single CAT5/6 cable with POE. We recommend you use an experienced security integrator to perform the installation to insure it is properly connected to your security system and is installed in the proper location. IPVideo has a network of Security Integrators throughout the USA and would be happy to recommend a HALO certified installer.