I have purchased the new radio with the docking station and currently waiting on it to get here. I originally bought it to upgrade my revo 5310 but I suppose I will be able to use it for my tmaxx 4907 as well. According to the parts list under the 4907 it says I need the long temperature/voltage sensor, I can't seem to find what rpm sensor to get and what is this traxxas telemetry trigger magnet? What sensors are available for this thing. Where can I go to find this information?