Bachmann 36-557A 21-Pin DCC Decoder with Back EMF and 4 Function Outputs

Bachmann 36-557 provides a basic technology decoder with the 21-pin socket type connection, ready to fit onto the 21 pin connectors. These are becoming more widely used, especially in OO diesel locomotives from Bachmann and Dapol. The decoder has one blank hole (the missing 22nd pin), ensuring correct orientation every time. Usually the decoder will fit flat just above the main control board, no wires to be tucked away during as the body is refitted!
This decoder provides a 1 amp power output with configurable high-frequency pulse-width modulation back-EMF motor control for smooth running and configurable speed curves. Shunting speed fucntionality allows the maximum speed to be halved for accurate speed control during slow running and shunting. Four function controls are available with a maximum 350mA combined output.
Decoder measures 25mm long, 15.5mm wide with socket at one end.