This combination Spektrum Variometer & Altimeter Sensor sends both altitude and variometer information to your transmitter.
The variometer is a telemetry sensor for sailplanes that indicates the rate of ascent and descent via an audible tone to your Spektrum transmitter. This provides an indicator to the pilot when the sailplane is in a thermal of rising, or sinking air. By knowing when the sailplane is rising or sinking, the pilot can keep the sailplane in rising air and out of sinking air providing longer flight times.
Key Features: