从China供应商批量进口Active Utp Balun--Sj-021r

The Active UTP balun SJ-021R from Shanghai Qunan Electronic Co.,Ltd. extends CCTV camera signal transmission over unshielded twisted pair cabling, eliminating the need for coaxial cables. It supports video signal transmission up to 1,500 feet, making it ideal for large-scale security installations where long-distance coverage is required. The active components in the balun reduce signal loss, preserving image clarity and stability across the transmission range.

This balun is designed for compact integration into existing security systems, offering a plug-and-play solution for both new and retrofit installations. Typical active UTP baluns in this category support a frequency range of 0 to 10 MHz, which is standard for analog CCTV signals. They are also built to handle voltage inputs of 12V DC or 24V AC, depending on the system requirements, and often include surge protection to safeguard against power fluctuations.

The SJ-021R is widely used in commercial, residential, and industrial surveillance setups where long-distance camera placement is necessary. It is particularly valuable in environments such as warehouses, parking lots, and large retail spaces. Buyers should confirm the balun’s compatibility with their specific camera models and cabling infrastructure, as well as the supplier’s trade terms for bulk orders.

Shanghai Qunan Electronic Co.,Ltd. is located at Room 2104, North Building, Pu Cheng Road, No. 158, Pudong, Shanghai, China. The supplier is classified as an imported-tier entity with a harbor trust tier, indicating a baseline level of verification. Currently, there is no verified data on response rate or average response time, which buyers should consider when planning procurement timelines.

The company specializes in security equipment, including active UTP baluns and related CCTV accessories. While the profile confirms the supplier’s address and operational tier, it does not provide additional details such as certifications, production capacity, or client references. Buyers are advised to request these specifics directly from Shanghai Qunan Electronic Co.,Ltd. to evaluate the supplier’s reliability and product quality.