Compact receiver Waterproof Plug in Bind Short Coaxial Antenna 2.4 GHz FHSS5 Spread Spectrum System 4ch Compatible with Telemetry Cannot connect RPM sensor and Temperature sensor To measure RPM and Temperature is only combine with SUPER VORTEX series Compatible with SSL (SUPER VORTEX Series, etc. .. ) Ultra Response Mode (SUR) Extreme Response Mode (SXR) Waterproof The smallest and most light receiver in the class Frequency 2.4 GHz FHSSS Channel 4ch Nominal Input Voltage 3.7~7.4 V Dimensions 18.5 x 20.2 x 27.4 mm Weight 6.8 g Compatible radio M17, MT-5, MT-R