Eagle Tree Systems Optical RPM Sensor for eLogger V4

The Optical RPM Sensor for eLogger V4 works with your logger to measure RPM via reflected infrared light. The sensor contains an IR light source, and an IR detector. The Optical RPM sensor should be installed so that its face (the flat part opposite the wiring) is facing a spinning surface in your model, such as the prop hub, flywheel, spinner, axle, gear, etc. This version of the optical rpm is for the eLogger V4, V3 and the V2. Optical RPM sensor for eLogger V4; Measures RPM via reflected infrared ligh...