The various implementations described herein include methods, devices, and systems for utilizing radar in smart devices. In one aspect, an electronic device includes: (1) circuit boards; (2) a housing encasing the circuit boards; (3) a communications module coupled to the circuit boards, including one or more antennas and configured for communicating with remote devices; (4) a radar module coupled to the circuit boards, configured for generating radar data for a home environment and including: (a) low power radar transmitters; and (b) radar receivers; (5) one or more processors mounted to one of the circuit boards, the processors configured to: (a) govern operation of the communications module and the radar module; (b) determine location and/or movement of detected objects in the home environment; and (c) detect anomalies associated with the detected objects; and (6) a power source coupled to the processors, the communications module, and the radar module.