Patent ID: 8299971

Claim:
A control module, comprising: a conductive metal chassis including a chassis body comprising a chassis bottom with a plurality of upwardly extending sides forming a planar top edge, and a chassis lid configured to engage the top edge of the chassis body; at least one electronic circuit board accommodated within the chassis body; a non-conductive opening defined by two side edges which extend from the planar top edge of the chassis body to a bottom edge in one of the upwardly extending sides of the chassis body; a tab extending from the chassis lid engaging the two edges of the non-conductive opening and projecting into the non-conductive opening when the chassis lid is assembled onto the chassis body for creating a rectangularly-shaped non-conductive aperture with a longitudinal axis having a predetermined length for forming a slot antenna structure, said predetermined length being a length designed to communicate with a specific communications frequency; and the slot antenna structure signally interconnected to a transceiver housed within the chassis.