The invention includes electronic monitoring-device for monitoring controlled spaces, as well as systems and methods for such monitoring. The monitoring-devices may be battery powered devices, with various sensors and capable of wireless communications. Installation of the monitoring-device may not require any wiring. These monitoring-devices may be installed at a given controlled space to monitor that given controlled space and to electronically communicate occurrences of that given controlled space to various interested stakeholders, such as, but not limited to, a tenant of the given controlled space, facility operators of the given controlled space, the provider of the electronic monitoring-device, and/or third-parties (e.g., insurance companies, first responders, and/or law enforcement). The monitoring-device may provide details, information, alerts, reminders, notices, notifications, alarms, and/or the like to various authorized stakeholders of the occurrences within that given controlled space. One example of a controlled space is a self-storage unit.