This is the KO Propo KR-408S 2.4GHz Spread Spectrum Micro 4 channel receiver. This should only be used with the KO Propo RF-901S module or EX-10 Helios and EX-1 UR 2.4Ghz radio systems.
The KO Propo 2.4Ghz system is not a frequency hopping system, but will lock onto a single channel during startup.
Li-Poly Voltage CompatibleThe KO Propo 2.4Ghz receiver is designed to handle the full voltage of a Li-Poly battery pack (8.4V) without needing a regulator.