HPI Racing 104060 HPI Rf-30 Receiver (2.4Ghz, 2 Channel) The RF-30 receiver is designed exclusively for the 2.4GHz TF-20U radio set from HPI Racing Use it as a replacement part for lost or damaged receivers, or as a way to use multiple cars with one transmitter The RF30 is designed for cars that use 5 cell(6V) receiver packs; The included RF-30 receiver uses low voltage cut-off as an extra safety precaution* *Not recommended for cars with ESCs or 4 cell receiver packs