Estink Window Openers, Greenhouse Automatic Roof Vent Opener, Replacement Cylinder Temperature Sensor for Greenhouse Window

Product Information

About

Great function: As the temperature changes automatically, maintains the best growing temperature and prevents your greenhouse from overheating.
Solar energy: Non-electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops.
Easy to use: for your greenhouse window.
High quality: Made of quality material, and convenient to use.
Note: This products need to be refrigerated before use it.