Single mode fiber optic transmission (0~20Km), compatible with multimode (0~500m). Transmit 1080p signal up to 20KM. Singlemode fiber: 0~20km, compatiable for multimode fiber 0~500m. This HDMI extender transmit HDMI signal over a single optical fiber cable up to 20 km by singlemode, and compatible with multimode 0~500m.
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