Atrea

Atrea is a custom integration that controls Atrea ventilation units from Home Assistant. It provides a climate entity with selectable presets such as automatic, ventilation, circulation, night precooling and periodic ventilation, and the enabled presets can be chosen in the options. Temperature readings for outdoor, supply, extract, exhaust and indoor air appear as sensors, and the digital inputs D1 to D4 appear as binary sensors. The analog inputs IN1 and IN2 are shown as voltage sensors and SA1 as a percentage sensor, so the voltages can be scaled to values such as CO2 concentration. Active warnings and alerts show up as buttons that become unavailable when the condition clears, and the filter replacement warning can be acknowledged from its button. It is set up in the UI by entering the unit's IP address and port, followed by a name and password.