this 6 pin direct plug decoder fits nicely into anyotive fitted with an nem651 socket. The decoder offers slow running characteristics and as it is the smallest decoder in the range you will always find places to house it. this pack includes a stay alive unit which are designed to aid yourotives running characteristics during slow running. This unit basically keeps the decoder alive for a few milliseconds if dirt or dead spots are located on the track. dimensions (each decoder): length: 13. 5mmwidth: 8. 5mmdepth: 3mmspecifications: number of functions: 2number of pins: 6 directcurrent rating: 750ma / 1amp motor driveaddress range: 1 to 9999reset value: cv8 to 8