Roku Entry Sensor 3-pack covers even more entry points to your home so you always know when someone’s coming or going. Easily add sensors to your Roku Home Monitoring System in minutes with guided instructions—no tools required. Receive instant entry, exit, and left open alerts right to the Roku Smart Home mobile app. Don’t worry about your sensors going down—the power-efficient design ensures your sensors stay powered for up to 18 months. Easily arm or disarm individual sensors and customize your home and away modes. Intruders, don’t let the door hit you on the way out.