Redcon 2.4G Satellite Receiver With Code Key For DSM2 DSMXJR Spektrum Transmitter Description: Brand Name: Redcon Item Name: 2.4G Satellite Receiver Weight: About 6g (receiver board only 4g, the shell can be removed easily) Dimension:25.7x 28.5x 6.7mm Input Voltage:3.3 V Modulation: for DSM2/DSMXUsage: Suitable for JR Spektrum transmitter This receiver comes with code key, so you can more convenient to use it with transmitter Package Included:1x Redcon 2.4G Satellite