This application report discusses the main challenges related to wireless motion detector design and how they are addressed by the SimpleLink™ Sub-1 GHz CC1310/CC1312 and SimpleLink dual-band CC1350/CC1352R/CC1352P wireless microcontrollers (MCUs). First, the application note gives a short overview of a wireless motion detector. Then the application report discusses the wireless technology requirements which must be met to support motion detector use cases and explains why Sub-1 GHz technology is an excellent fit. This application note explains how to build the system based on the SimpleLink Sub-1 GHz CC131x wireless MCU or the SimpleLink dual-band CC135x wireless MCU, with focus on low power, networking, and cloud connectivity, as well as Sub-1 GHz and Bluetooth® low energy use cases. The document concludes by describing a potential use case, including its state machine and power consumption analysis.