This part of the IEC 62642 provides for security grades 1 to 4, (see IEC 62642-1) specific or
non-specific wired or wirefree opening contacts (magnetic), and includes the requirements for
four environmental classes covering applications in internal and outdoor locations as specified
in IEC 62599-1.
A detector fulfils all the requirements of the specified grade.
Functions additional to the mandatory functions specified in this International Standard may
be included in the detector, providing they do not influence the correct operation of the
mandatory functions.
The two separate parts of the opening contact (magnetic) are referred to in the body of this
International Standard as the detector.
This International Standard does not apply to system interconnections.