This optical RPM probe measures the speed of your motor and is compatible with the Flight Stand 15 and 50.
Note: this is a replacement part for the probe itself. You may also need the Fasteners Bag to mount the probe on your Flight Stand.
The probe is installed on your Flight Stands' motor mounting plate and sits 5 - 15 mm away from your motor. It uses an optical sensor to detect a piece of reflective tape on your motor, and counts the number of times that tape passes in front of the sensor.
It has a range of 0 - 30,000 RPM with an accuracy of ±1 RPM.