A system that uses smart power cords with integrated sensors and wireless interfaces to manage devices in a facility such as a hotel. Each cord may monitor power delivered to an attached device, and may measure variables such as temperature, humidity, and pressure. It may also act as a gateway to other devices in the vicinity. A central control station may manage the devices in the facility via the smart power cords. Data collected from smart power cords may be analyzed to provide alerts and management reports. Illustrative alerts may warn of attempted theft when a device is unplugged, of environmental conditions that suggest mold risks or HVAC problems, or of a staff member requesting assistance via an emergency alert forwarded through a smart power cord. Locations of smart power cords may be automatically configured using either cooperative or non-cooperative localization based on measurement of signal characteristics such as RSSI.