You don’t have to worry for your greenhouse temperature or plants to wilt or damage, from extra heat or cold, you don’t have to worry for opening and closing the greenhouse vent, the Automatic Louver opener Just makes gardening easier.
Automatically opens and closes the louver window when temperature changes (start opening point: 12-15 ◦с)
The opener has a metal piston containing special wax which expands when heated.
This pushes and opens the window quiet and safely. As the temperature cools, the wax get shrinks. Opening and closing of the window is gradual and allowing just the right amount of air flow for cooling greenhouse space.
All you need to do is to install it on your greenhouse window and it automatically starts working.