FLYSKY TELEMETRY MODULE (OPT) FOR I6X RADIO/IA6B RECEIVER Compatible with the FS-I6 & FS-I6X using the IA6B Receiver. SPECIFICATIONS Product Name: Speed sensor (light sensor) Speed Measurement Range: 0 ~ 60000RPM Power: 4.0 ~ 8.4V Data Port: i.bus / (sens) Temperature Range: 0 ? — + 60 ? Humidity Range: 20% -95% Dimensions: 31 * 15 * 8.5mm Weight: 6.8g