Tiny sensor measures RPM by simply connecting a wire from one of your brushless electric motor leads to the sensor. Features: - Measures RPM via pulses from one or two wires leading from the electronic speed control to the motor - Works with all known brushless motors only-will not work with brushed motors.

Specifications:                                                         Instructiuni
Length: 18.5 mm
Width: 12 mm
Thickness: 3.5 mm
Weight: 5 g
Receiver Lead Length: 292 mm
Motor Lead Length: 241 mm