Everything you need to to create peace of mind. Just connect the Insteon Hub to your existing home router and start adding devices. This kit includes the Insteon Hub, two dimmers modules which allow you to remotely control one or more lights, and create schedules, one Leak sensor to alert when water is present, one motion sensor which alerts you to motion in your home, and one open/close sensor which alerts you to things being opened. Or link them together for custom solutions.