This is a Futaba 01004415-3 4PM Plus 4-Channel 2.4GHz T-FHSS Radio System with R304SB-E Receiver. Features: T-FHSS SR (SUPER RESPONSE) AND TELEMETRY T-FHSS: In addition to the T-FHSS telemetry system, we added a T-FHSS SR (Super Response) system that increased processing speed to further improve response. SR system does not support telemetry functions. R304SB and R304SB-E are not compatible with SR system. T-FHSS MINIZ SYSTEM: By changing to the MINIZ system in the receiver setting menu, you can use Kyosho Mini Z Evo dedicated receiver RA-42. Trainz Product Id: 12634094.