This is a replacement cylinder for automatic window opener.
Highly sensitive, automatically responds to weather changes, so you don't have to be near the greenhouse.
Non-electric, uses solar energy, opens or closes greenhouse vents as the temperature rises or falls.
Greenhouse window automatic roof vent opener is good for most greenhouses to open or close windows automatically.
Time and labor-saving, can also provide a better temperature condition for plant growth.
Specifications:
Condition: 100% New
Temperature range: 20~25 / 68~77
Size: approx. 33 * 1.5cm / 12.99 * 0.59in
Color: black + silver
Material: stainless steel + plastic
Package contents:
2 * Window opener
Only the above package content, other products are not included.
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.