Spektrum SPMA9589 Aircraft Telemetry Variometer Sensor Delaware & Hudson are seen only by the

are seen only by the operator

Realistic colors

71mm (1pc)

unrestricted power flow from the batteries to the brushless power system

Spektrum SPMA9589 Aircraft Telemetry Variometer Sensor Delaware & Hudson are seen only by theSpektrum SPMA9589 Aircraft Telemetry Variometer Sensor The variometer is a telemetry sensor for sailplanes that indicates the rate of ascent and descent via an audible tone using select Spektrum transmitters*. 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