Transmitter Accessory--Tethered Cable. 10m cable for connecting tether-enabled T150 abd T300 remotes to receivers to bypass radio communication. Tether cables for the TD series available in lengths of 10m, 15m, and 30m. There are two types. One works with the T150, T300 & TD3200 and another tether cable that works with the TD1140, TD2100 and TD3100.