External room units
The ED-RU units can be connected to several different products and could, for example, be used to control an air handling unit running a ventilation application.
They can be used to change fan speed, set temperature, extended running, etc. at a distance of up to 300 m.
https://www.regincontrols.com/en/se/products/controllers/displays–room-units/wall-mounted/external-room-units-p11407/

