II – Indoor Controlled
67mm x 14mm x 12mm
5 Screw Changeover Reed Surface Contact (Brown)
D50B is a 5 terminal surface contact.
This particular variant includes a Changeover (C/O) reed.
Of the 5 available screws, 2 nickel + 1 brass screw carry the signal from the switch (C, N/O, N/C) while the remaining two brass screws function as spares.