Control buttons
| Operating mode: Continuous ventilation with heat recovery (PushPull operation). All ventilation units connected to the RLS operate with heat recovery. RLS 45 K: Operating mode active when button LED lights up. RLS 45 O: Operating mode can be set with DS 45 RC: For PP 45 RC/PPB 30 RC LED display at the bottom of the ventilation unit. Orange LED lights up and flashes x times according to ventilation level. |
| Operating mode: Cross-ventilation without heat recovery (supply air mode: ventilation, summer operation, PPB 30 exhaust air mode). RLS 45 K: Operating mode active when button LED lights up. RLS 45 O: Operating mode can be set with DS 45 RC: For PP 45/PPB 30 RC LED display at the bottom of the ventilation unit. Blue LED lights up and flashes x times according to ventilation level. |
| RLS 45 O: Operating mode setting button. |
| RLS 45 K, DS 45 RC: Ventilation level setting buttons. Associated ventilation level LEDs light up (LED display with the 3 vertical LEDs, depending on the LED combination level 0 to 5). |
| RLS 45 O: Ventilation level setting button. Associated ventilation level LEDs light up (LED display with the 3 vertical LEDs, depending on the LED combination level 0 to 5). |

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