Our tip for you - The Automatic window opener
The Juwel automatic window opener opens and closes your cold frame
due to the inside temperature. With rising temperature (adjustable
between 15 and 17 deg.C) the windows opens autonmatically and closes
again when it gets colder - no electricity, no batteries just solar
engery!
If you choose the Premium cold frame Biostar 1500 the
automatic window opener is already included, with all others the opener
can be obtained as an add-on...
look at Accessories/ Spares
