Roller Shutter 1 Or 2 Contacts? in Guest Forum Posted February 16, 2012 Not only that but roller shutter contacts have very high tollerence sometimes upto 30 mm therefore over 3mtrs should really be 2 contacts confimed right away, or intruder if lifted from one side..
Roller Shutter 1 Or 2 Contacts?
in Guest Forum
Posted
Not only that but roller shutter contacts have very high tollerence sometimes upto 30 mm therefore over 3mtrs should really be 2 contacts confimed right away, or intruder if lifted from one side..