Temperature controlled sensor cylinder enables louver vents to be opened and closed at the appropriate time, ensuring sufficient airflow
Simple and effective way to provide extra ventilation for your greenhouse
1. Material: alloy aluminium and stainless steel
2. Star open at: 20-25℃ (68-77℉)
3. Fully open at: 38-40℃ (100-104℉)
4. Fully close at: 15℃ (59℉)
5. Loading: 7kgs/15lbs
6. Easy fitting by clamps or screws provided.
7. No batteries or electricity required.
