* Mounting with screws on metal sheet with maximum thickness of 4 mm
* Connection : solder type or single tab terminal for 2,8 x 0,5 mm clips
* Moulding material : black bakelite
* Hold down springs 9981 for relays 2246-2248
* Hold down springs 9982 for relays 23xx and 2811
* complete coding accessory permitting 20 standard combinations by shutting 3 holes on the socket.
* Possibility of mounting in specific pre-cut track with reference .