You can effortlessly prolong battery life by frequently checking its voltage. Measuring 1-cell for Walkera/Novus and 3-6 cell for Trex450/600 helis, this one step plug & test meter is accurate and much easier to use than most cumbersome voltage meters.

This is a battery meter with built-in low voltage alarm can also be installed on board helicopters. At low voltages, a led will light up and the double buzzers will also sound a warning for pilots who are too far from the helicopter to prevent crashes.

This pitch scale is a wider design that measures +15 to -15 degrees Instead of the typical +12 to -12 degrees. Contrasting orange scale & deep blue pointer with a larger finger friendly low increment knob makes it easy to see and make minute adjustments.

This is a telemetry package with 2 voltage sensors and 4 heat sensors. Although it has the input connector for GPS data, the GPS module itself is not included.

Radio transmitter hands free neck strap. Total length 45 inches.