Stable characteristics, high reliability The MOST Diagnostic Kit helps you quickly locate fault points, whether related to the motherboard transceiver or cable connection issues The optical fiber loop allows removal or addition of a single vehicle device without affecting the car's fiber-optic network Can diagnose and identify fault points when a node in the MOST (Media Oriented Systems Transport) network fails Bluetooth phone module often malfunctions when stereo sound is intermittent or absent; the fiber head of the phone module can be disconnected and connected to the fiber loop to disable the Bluetooth phone function, restoring audio immediately Attenuation: less than 180dB/km Working temperature: -55°C to +85°C Color: black Material: plastic Size: 11.5cm x 2.5cm x 1.2cm (L x W x H) Core diameter: 1.0 Finished product diameter: 2.3 x 2 Package Contents: 1 x Male Connector 1 x Female Connector Only the above package content; other products are not included Note: Light and display differences may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3cm