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Fax:+86-571-88220227
Mail:[email protected]
Add:No. 2, Longshen Cdc, Sandun Town, Hangzhou, Zhejiang, China
Automatic Greenhouse Vent
Automatically opens and closes the roof vent/window when temperature changes. The opener has a metal cylinder containing a mineral which expands when heated. This pushes a piston that opens the vent. As the temperature cools, the mineral shrinks and a spring closes the vent and resets the piston. The opening and closing of the vent is gradual allowing just the right amount of air flow for cooling.
automatic greenhouse vent
Automatically opens and closes the roof vent/window when temperature changes. The opener has a metal cylinder containing a mineral which expands when heated. This pushes a piston that opens the vent. As the temperature cools, the mineral shrinks and a spring closes the vent and resets the piston. The opening and closing of the vent is gradual allowing just the right amount of air flow for cooling.
Starting opening point: 75° F to 80° F
Opens roof vent automatically as temperature warms for air circulation and heat relief, closes when temperature cools
Solar powered, heat activated
No electricity needed