Futaba - SBS-01RO Optical RPM Telemetry Sensor ASC20174C commonly referred to as data

commonly referred to as data logging

with four load-spreading legs that can easily be moved to any required position

and linkage mounts

Eliminates axle wrap and unwanted axle steer

Two pairs of Tender Spring

Futaba - SBS-01RO Optical RPM Telemetry Sensor ASC20174C commonly referred to as dataUse: Indicates the number of rotations of the item (propeller, rotor, etc.) to which it is attached. Range: 360 ~ 300,000 RPM blades Length: 160 mm 6. 3 in Weight: 4. 9 g 0. 173 oz Voltage: DC 3. 7 ~ 7. 4V The SBS 01RO is not optimal for helicopter use due to the large distance between the rotor and sensor, as a result, the reading can be unstable. It is recommended the SBS 01RM Magnetic Sensor be utilized for Helicopters.