Morley 797-021 Spare key for ZX series control panels

The 797-021 is a spare key for ZX series control panels, supplied as a single unit. Being a mechanical spare key, it carries no electrical, environmental, or operational specifications, and the evidence records no physical dimensions, weight, material, or colour for the part. No standards, approvals, or certifications are stated for it either. Its documented compatibility is limited to the ZX series control panels it is a spare key for, and it remains an accessory rather than a control panel in its own right.