Special Features - The control allows for 5 ventilation levels PP45-15/20/30/36/42 m³/h and PPB 30 - 5/12/18/22/26 m³/h, as well as 3 operating modes: continuous ventilation (with heat recovery), cross ventilation (without heat recovery), and sensor-controlled automatic operation. - Operating mode continuous ventilation with heat recovery: PushPull operation. The devices run alternately and change the direction of operation every 60 seconds. - Operating mode cross ventilation: One device is permanently in supply air operation and the corresponding device is in exhaust air operation (e.g., for summer night cooling). - In automatic mode, the airflow volume is continuously adjusted according to the sensor value (HYI, HY, CO2, VOC). - The room air control RLS 45 O can be expanded with the internal humidity sensor or with external sensors (humidity, CO2, VOC). The airflow volume is adjusted, and the devices achieve energy efficiency class A+. - Operation with an odd number of devices is possible. The airflow rates are automatically distributed according to the number of devices. - Modbus connection is possible. - The control can be expanded with additional controls or power components PP 45 LT. Features - The room air control is required as an accessory for the final assembly sets PP 45 K, PP 45 O, or PPB 30 O. - Operation of the final assembly set PPB 30 K in conjunction with the room air control RLS 45 O is not possible. - Up to 6 PP 45 devices or up to 3 PPB 30 O devices can be controlled simultaneously via a room air control RLS 45 O. Article: RLS 45 O - Rated voltage: 230 V - Power supply line: 3 / 1.5 mm² - Installation location: Wall - Installation type: Flush-mounted - Material: Plastic - Color: pure white, similar to RAL 9010 - Weight: 0.11 kg - Weight with packaging: 0.33 kg - Width: 80 mm - Height: 80 mm - Depth: 49 mm - Width with packaging: 81 mm - Height with packaging: 81 mm - Depth with packaging: 50 mm.