An interface kit for the SPC-ET Beam Smoke Detector, comprising a Dual-Gang Back Box adaptor plate and 2-core ribbon cable for the emitter unit and Dual-Gang Back Box adaptor plate and a 9-core ribbon cable for the receiver unit.

The kit is used to fit the units to the standard Dual-Gang back boxes used in the UK, to make wiring simpler.  All termination wiring between the units is carried out at the adpator plates, making the fitting of the actual SPC units a simple plug and play process, using the ribbon cables.