So you would like to be alerted to unexpected activity in your rooms? The Abode Wide Angle Motion Sensor has you covered. It has a 110-degree detection radius at 35 feet and uses body heat for motion detection. It notifies you when unexpected motion is detected.
The Abode Motion Sensor lasts for 5 years on battery life. It has 2 sensitivity levels. It can be placed in corners on a flat wall. You can set it up to let you know when motion is detected past a certain time each night.