Features: This RJ45 to RJ11 converter can expand their phone line capabilities. Made from durable ABS material, this converter is long lasting and deliver consistent-performance. Suitable for households or small offices with 4 phone lines, this converter allows you to easily split one phone line into four. Whether you need to connect multiple phones in different room or use a fax machine and phone simultaneously, this converter has got-you cover. RJ45 to RJ11 Converter Adapter, network port to telephone port, only used for telephone or network cable to telephone use; Specifications: Material:ABS Color:White Size:Approx.65x39x28mm/2.56x1.54x1.1in Operating temperature:-10℃-50℃ Model:WDT-RJ45/11 Package Includes: 1xRJ45 to RJ11 Telephone Line Splitter note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.