Greenhouse Gas Spring, Highly Sensitive Automatic Greenhouse Gas Spring with Single or Double Springs for Automatic Window Openers Accessories

HIGH QUALITY: The core technology is a hydraulic cylinder containing a premium replacement cylinder made with plant-based wax for automatic greenhouse window openers, or Aotovent, as they are commonly called. UNIVERSAL: The replacement cylinder is compatible with most greenhouse window openers with single or double springs. SOLAR POWERED: This specially designed cylinder, containing this wax, functions as a window opening thermostat in greenhouses; Therefore, no electrical power supply is needed. Uses solar energy to heat the cylinder. Open or close the greenhouse vents as the temperature rises or falls, helping to maintain optimal growing conditions in your greenhouse. REPLACEMENT CYLINDER ONLY: One replacement cylinder for greenhouse window openers. The complete automatic vent opener kit is not included. Made of quality material and convenient to use. 1. Made of quality material and convenient to use. 2. As the temperature changes automatically, it maintains the best growing temperature and prevents your greenhouse from overheating. 3. Non-electric, uses solar power to open or close the greenhouse vents as the temperature rises or falls. 4. For your greenhouse window. 5. This product must be refrigerated before use. Monitors are not calibrated the same way, so the item color displayed in photos may be slightly different from the actual object. Please consider the real object as the standard. Please note that the new and old types of this product will be sent randomly, and please ensure this is acceptable to you before ordering.