The HITEC HTS-VOLT is a sensor compatible with Hitec telemetry capable of detecting voltages up to 100Volt with an accuracy of 0.1Volt per unit.

Hitec HTS-MRPM magnetic sensor for motor speed detection (RPM)

RC4 MyLaps RC4 transponder

Hitec HTS-C50 is a sensor compatible with Hitec telemetry capable of detecting currents up to 50Amp.

Hitec HTS-Airspeed - 55854 - speed sensor for telemetry

Sensor able to accurately measure the real flight speed of the model thanks to a probe that detects the static and dynamic air pressure differential, just like in real airplanes.