Hobbyking R2 Speedometer for RC Car

Hobbyking R2 Speedometer for RC Car.
The Hobbyking R2 Speedometer is a car speed recorder designed for RC car hobbyists. It allows the user to record the cars max speed, acceleration, battery voltage, and even motor RPM!

Features:
-Measures and records present car speed, max car speed, and average car speed
-Measures the time it takes to reach a designated speed
-Accurately measures battery voltage
-Accurately measures motor RPM

Specs.
Working temperature: -20°C to 50°C
Weight: 21g (without connection wire)
Dimensions: 33x11x69mm
Input voltage range: 3~24V (7.4V recommended)