Usage Tips:: Efficient production line, comprehensive testing process. The HY-21-R23x optical node is a compact indoor optical node especially designed for FTTH application. It features a single MMIC chip, compared with the two-stage amplifier structure, offering high integration, high performance, and excellent anti-jamming performance. It achieves optimal linearity and low noise figure with minimal power consumption through power-saving technology. It also supports digital AGC control via I2C interface. This device provides a high-quality and high-performance FTTH network solution for cable TV operators. Plug Type: EU Plug, suitable for use in Indonesia, Germany, France, Spain, Italy, and other regions with compatible outlets. Voltage: AC 220V. Color: White. Material: Plastic. Type: A: (SC APC-SC APC) / B: (SC APC-SC UPC). Package Contents: 1x Receiver. Only the listed item is included; other products are not included. Note: Light reflection and different display settings may cause slight variations in the color of the item in the picture compared to the actual product. Measurement error allowance is +/- 1-3 cm.