ITEM NAME:CM921S DSM2 9 Channel Receiver for JR Transmitter Description: CM921S 2.4 GHz 9 Channel Receiver is a high quality aftermarket parts. Used for aircraft with capable transmitters JR, Type: CM921S high-speed 9-channel receiver. Modulation: DSM2/. Dual channel wireless frequency hopping technology with preset full channel protection, external and internal receiver functions. Specification: Channels: 9CH Modulation: DSM2 RF Range: Size Chart: Size: 31*23*7mm / 1.22x0.90x0.27inch Package Includes: 1 Piece CM921S 9-Channel Receiver SKU: MNF0023188261019112.Type: CM921S high-speed 9-channel receiver. 1 Piece CM921S 9-Channel Receiver. Modulation: DSM2/. Modulation: DSM2. Dual channel wireless frequency hopping technology with preset full channel protection, external and internal receiver functions.