The present invention prevents misassembly of access doors while reducing stress concentrations. By forming a binder free melt of a polymer of such polymer compositions, and converting the melt into pellets as described here-in, pellets can be formed produce during production, handling, and use, no more than acceptably small amounts of \u201cfines\u201d or air-entrainable dusts. The second housing has a transceiver for wireless communication and a microcontroller integrated with the transceiver.