This is a replacement cylinder for automatic window opener.
High sensitivity, 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 when the temperature rises or .
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: . 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 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 +/- 1-3 cm.