Key, has contact arrangements lying near button cell with pole bearing surfaces, and button cell fastened in retaining slot of cover, where arrangements lie near cover with respective plate bearing surfaces at contact zones of plate

摘要

The key has a grip with a housing (3, 4) having a plate and an electrical circuit (22) i.e. transmission circuit. A battery box (7) accommodates a button cell (8) that stays in conductive connection with a pair of electrical contact arrangements (11, 14) by a closed cover (5). The contact arrangements lie near the button cell with respective pole bearing surfaces. The button cell is fastened in a retaining slot of the cover. The contact arrangements lie near the cover with respective plate bearing surfaces at contact zones of the plate.