Oumefar Greenhouse Window Openers Solar Sensitive Automatic Roof Vent Opener Window Replacement Compatible with Cylinder Temperature Sensor, Greenhouse Vent Automatic Opener

【USE SOLAR ENERGY】: This vent opener cylinder is 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.
【CONVENIENT TO USE】: 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.
【AUTOMATIC TEMPERATURE CHANGING】 : The greenhouse winder opener will automatically change due to temperature, maintains the best growing temperature and prevents your greenhouse from overheating.
【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.