Product designed to meet the requirements of EN50131-2-6:2008 Grade 3 and Environmental Class III. Suitable for use in systems designed to comply with PD6662:2017 6 Wire Contact with built in resistors for use in Fully Supervised Loop or standard Double Pole systems, using Single or Multiple doors. This surface mounted magnetic contact is designed to meet the requirements of TS50131-2-6:2004 for immunity to the effects of an external interfering magnet when installed.