Product Detail Now compatible with the MR3000 3-channel marine receiver and DSM2 surface receivers, in addition to DSM surface receivers. Integrated telemetry with graphically depicted gauges on transmitter (requires DSM telemetry compatible surface receiver)* 10-model memory Includes free bonus SR300 3-channel DSM sport receiver Monitor your engine or motor’s operating temperature in either Fahrenheit or Celsius . The "DX3S 3-Channel DSM Surface Radio with Telemetry" is best product for you. We recommended DX3S 3-Channel DSM Surface Radio with Telemetry