If you don’t have a PoE+-enabled switches, with any Cat5 (or Cat6) ethernet cable and a power adapter (PoE+ injector) you can simply plug the devices into a wall outlet. In other words, you do not need to connect a Density sensor to a network switch in order to get power. Any outlet will do.
All power is provided over a standard cat 5e/cat6 cable to an RJ45 jack on the back of the Density unit. You have the option of using a standard 120-240V outlet for power or getting power from a port on a PoE+ (“PoE plus”) rated switch. Most of our customers deploy Density devices on their existing IT infrastructure as they can both power and data over one cable.