Hornby R7322 HM7000-21TXS: Bluetooth & DCC Sound Decoder (21-pin)
R7322 Hornby HM7000-21TXS: Bluetooth & DCC Sound Decoder (21-pin). 21-pin Bluetooth® and DCC sound decoder is ready to plug into locomotives featuring a 21-pin (NEM660) socket. This is quickly and easily plugged into a socket on the decoder.