Operating instructions DuoFern motion detector 9484 (indoor) Y. Beenen Updated February 21, 2024 09:13 Follow Download PDF Related articles Operating instructions Window/door contact 9431 Operating Instructions Smoke Alarm 9481 Information about the RolloTube S-line DuoFern Operating instructions RolloTron Basis 1100 Integrate water detectors, light barriers, reed contacts by radio transmitter UP