This is the Hitec HTS-SS Blue Electric Telemetry Sensor Station. FEATURES: For use with the Hitec HTS-SS RC aircraft telemetry system installed in electric powered helicopters, gliders and airplanes Collects data from each sensor installed in aircraft and sends it to the transmitter via the Hitec Optima 7 or Optima 9 omni- directional receivers Two year limited warranty through Hitec beginning at date of purchase INCLUDES: Hitec HTS-SS Blue Electric Telemetry Sensor Station with Instructions SPECS: Size: 1.5 x 1.1 x .32" (37 x 27 x 8mm) Weight: .250oz (7.1g) jxs 12/27/11 ir/jxs