It is temperature adjustable and can be set to start opening the window from 13 – 18°C (55 -65 °F).
Bayliss XL Autovent Automatic Greenhouse Window Opener Solar Roof Vent Opener
Bayliss XL Autovent Automatic Greenhouse Window Roof Vent Opener Auto Vent
Bayliss Automatic Autovent Greenhouse Window Opener x 2
Bayliss Mk 7 Greenhouse Window Autovent Automatic Opener Auto Vent Green House
Bayliss MK7 Autovent Automatic Greenhouse Vent Window Opener
