Automatic Greenhouse Window Opener Solar Sensitive Automatic Greenhouse Window Opener Cylinder Replacement Temperature Sensor

- Easy Installation: The greenhouse winder opener cylinder could be clamped onto or screwed onto your greenhouse frame, easy to install , and perfect for your greenhouse window. - Excellent Performance: This is a replacement cylinder for automatic window opener, high sensitive, automatic respond to weather changes, so you don't need to stay near the greenhouse. - Solar Energy: Non electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops. The window opener will be very environmental and co2-friendly throughout its whole lifetime. - Wide Applicability: Great for most greenhouse to open or close window automatically. Time and labor saving, also can supply a better temperature condition of plant's growth. - High Quality Materials: Our greenhouse winder opener cylinder is made of quality material, durable and convenient to use, and can supply a better temperature condition of plant's growth.