Looking at ordering some sensors & just come across this...
http://www.ebay.co.uk/itm/HAWK-No-Holes-...4d306682e1
Anyone heard of this? Might give it a go, would prefer invisible!
EDIT:
Cheaper ones here too
http://www.ebay.co.uk/itm/Invisible-Elec...27ff7e8941
http://www.ebay.co.uk/itm/HAWK-No-Holes-...4d306682e1
Anyone heard of this? Might give it a go, would prefer invisible!
EDIT:
Cheaper ones here too
http://www.ebay.co.uk/itm/Invisible-Elec...27ff7e8941