LSR 35

Ventilation controller

Ventilation controller // LSR 35
  • Temperature-dependent ventilation controller.
  • Complies with all current safety standards. PL=C in conjunction with emergency stop switch (accessories).
  • Scope for connection of a wind and a rain sensor.
  • One temperature for a 230 V 1~ drive unit can be connected to directly.
  • Simple to operate using a big color display.
  • Independent runtime recording, minimum opening and maximum opening of side A and B possible.
  • Desired temperature value adjustable from -20°C to +60°C.
  • Cycle times, wait times and hysteresis are adjustable.
  • Plastic housing incl. temperature sensor.
  • ‘Vibrate’ function protects the unit against freezing in sub-zero conditions.
  • Override of manual cycling action is possible.
  • Integrated counter for operating hours.


  • Windspeed sensor WST 15.
  • Rain sensor RST 65. ​​​​​​


  • Advice from our climate experts.