When doing roller shutter mend on these sensors, you need to be certain they are as clear as you possibly can, in suitable alignment, and that their structural and electronic components are not ruined. They changed what required sorting on two quite huge shutters. Good communications also. Would really https://damienrpacf.blogdomago.com/26516521/details-fiction-and-24-7-all-doors-and-roller-shutter-repairs