Abstract: A modular electronics assembly comprising: removable electronic modules comprising a module housing containing electronic circuitry and bearing a module electrical connector coupled to the electronic circuitry each removable electronic module having a first alignment formation; an enclosure having an interior dimensioned to contain the removable electronic modules therein, the enclosure including, one or more enclosure electrical connectors corresponding to one or more of the module electrical connectors for establishing a connection, guide members extending into the interior of the enclosure for guiding respective ones of the module housings toward the enclosure electrical connectors; second alignment formations each arranged to cooperate with a respective first alignment formation of the removable electronic modules for aligning module electrical connectors with enclosure electrical connectors to thereby establish connection; wherein the first alignment formations are positioned on the module housings to re