This is a replacement cylinder for automatic window opener.
Highly sensitive, automatic response to weather changes, so you don't need to stay near the greenhouse.
Non-electric, uses solar energy, opens or closes greenhouse vents as the temperature rises or falls.
Automatic greenhouse roof window opener is perfect for most greenhouses to automatically open or close windows.
Time and labor saving, can also provide better temperature conditions for plant growth.
Specifications:
Condition: 100% New
Temperature range: 20~25 / 68~77
Size: approx. 31.5 * 1.5 cm / 12.4 * 0.59 inches
Color: black + silver
Material: stainless steel + plastic
Package contents:
2 * Window opener
Only the above package content, other products are not included.
Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The allowed measurement error is +/- 1-3 cm.