A variety of ancillary housings are available to fit the 800 Series MZX ancillaries.
The standard sized modules are mechanically compatible with all options. LPCB Approval Certificates are with the M800 double gang cover plate or ancillary housings. VdS certification is with the Zettler ancillary box and ancillary housings.
The M520 double gang cover provides external access for the MZX SERVICE TOOL to plug into the ancillary module which is mounted in the cover.
All options allow the ancillary to be programmed and tested when the cover is removed.