The WM-2PB is a wedgelock accessory designed for 2-way DTM series receptacles in black finish, specifically engineered for J1939/15 2-wire CAN (Controller Area Network) systems. This wedgelock provides secure mechanical retention and keying compatibility with DTM04-2P receptacles used in reduced physical layer 2-wire CAN systems consisting of unshielded twisted pair wires. The WM-2PB is available with A, B, C, and D keying options to prevent mis-mating and ensure proper connector alignment in automotive and industrial control applications. It is commonly used in ECU (Engine Control Unit) networks and distributed control systems where reliable connector retention and correct polarity are critical for serial data communications.