Techs at bendix referred to item as ws2d which is a sensor mounted on wheel and generates (senses) a wheel pulse in relation to wheel speed and/or modulates air pressure accordingly. They described it as essentially a "coil around a bag with two wires to activate the brains of the brake".
NSN 6610-01-422-2376
NSN 6685-01-363-2765
NSN 5930-00-452-1316
NSN 5895-00-150-2347
NSN 2925-00-233-5644
NSN 5920-01-100-3018
NSN 6150-01-460-9626
NSN 2925-01-411-4666
NSN 5935-00-880-0150
NSN 6240-00-538-0920
NSN 6130-00-873-4468
NSN 6145-01-359-8028