Generic Auto Window Opener, 1 X Auto Vent kit Powered by Solar Heat for Universal Agricultural Greenhouse Corps Planting Temperature Controller

Description:

This pushing energy come from the sun and surrounding air. This pushes a position which opens the vent via a balanced linkage. As the temperature rises, the vent will open. As the temperature drops, the strong stainless steel spring closes the vent and resets the positon.
Specification:

Greenhouse Window Opener Kit
Maximum window opening 45cm
Maximum opening about 30°, depending on adjustment and load.
Maximum opening weight 7kg / 15lb
Adjustable open temperature range 15°- 25°/60°-77F.
Package Includes:

1# Automatic Window Opener Kit / Replacement Greenhouse Window Opener Cylinder (You can choose what you want)
Notes:

Do not use this opener anywhere the temperature will exceed 50°(122F).
Please ensure your greenhouse window can be opened freely by at least 45cm (18").
Do not apply excessive loads by locking or covering window.
Do not dismantle the cylinder.
The opener CANNOT stop by manual.
Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.

• Anodised Aluminium:This window opener uses high quality anodised aluminium, lightweight and anti-rust, sturdy and durable. The maximum opening weight is 7kg / 15lb, nice performance in the control of multiple windows.
• Auto Adjustment:According to real time temperature, the window opener will continuously adjust air flow rate by adjusting window angel to provide best growing temperature for universal crops. You may have experienced a tragedy that lost plenty of crops because you didn't open the window in time. Now, tragedies will not happen again with it, saving time and free hands.
• Temperature Change Automatically:The controller start to open the window at the temperature of 15??c to 25??c (60??-77??F), the fully open temperature is 35??(19F) or above. Maximum open distance is 45cm (18inch), it meets the window opening range requirements of almost all windows, and also ensured the requirement of ventilation rapidly and temperature adjustment in a suitable level, that is impossible to achieve by manual adjustments.
• Reliable and Stable:The metal tube in automatic window opener contains a mineral which expands with heat, it's power source. Compared with power controller, our product is energy saving and will not stop working in the case of power off. If you have extensive greenhouse planting area, use our automatic window opener to control greenhouse's temperature will be a good chioce for you. The ability of temperature adjustment is reliable, also you can save money on electricity.
• Install Easily:We have reserved the nut, just install it with screw to where you want without much professional skill require. Now, let the window angel adjustor to control the ventilation of the window for you.