Knight Roller Shutter Contact is suitable for double doors 1 metre, suits all panels. This is compatible with all mainstream UK control panels and includes both EOL and alarm by-pass resistor options. It includes resistors compatible with Honeywell, Ademco, Orisec, Scantronic, Menvier, Texecom, Pyronix, Castle, Aritech, Europlex, HKC, Gardtec / RISCO, Inner Range, Guardall control panels. It comes with magnetic interference detection and selectable resistors.