Raspberry SCM is a simple tool that started as a concept to monitor small to medium server rooms remotely, it integrates with NUT to monitor UPS systems, different temperature sensors DHT11 & DHT22, email alerts, permissions and finally relay control for Power Management.
To perform RMM we use Raspberry with a central server, the new project is now at https://git.derekdemuro.com/ddemuro/raspi-scm not https://github.com/ddemuro/raspi-scm
Archive version is still in git if you just want to snoop in the early days.