G
Gazzer
Purchase Digital Hygrometer from Ebay
, while you are there you may as well get the 50mm foam too.....I bought 4 units and one piece of High density foam which was enough to make 4 units.
Cut foam to 200mm square
Then route out the rear ,,,,,You can easily make the correct size round hole with a Silicon sealant tube, just push and twist it through the foam.
Insert the Hygrometer unit which is a push fit int the round hole
I have had all 5 units on in the same area in my house and there was only a 1% difference .
Total cost ????.....£22 ! per unit.
http://www.ebay.co.uk/itm/Panel-mou...t=UK_Pet_Supplies_Poultry&hash=item3cd31d94d1
http://www.ebay.co.uk/itm/yellow-hi...oods_Canoeing_Kayaking_ET&hash=item338492a89a
Cut foam to 200mm square
Then route out the rear ,,,,,You can easily make the correct size round hole with a Silicon sealant tube, just push and twist it through the foam.
Insert the Hygrometer unit which is a push fit int the round hole
I have had all 5 units on in the same area in my house and there was only a 1% difference .
Total cost ????.....£22 ! per unit.
http://www.ebay.co.uk/itm/Panel-mou...t=UK_Pet_Supplies_Poultry&hash=item3cd31d94d1
http://www.ebay.co.uk/itm/yellow-hi...oods_Canoeing_Kayaking_ET&hash=item338492a89a