The Viewsonics VSA-601L RF Amplifier is a high-quality signal amplifier designed for use in video systems. With a 6KV surge protection rating, this 12Vdc amplifier is durable and reliable for outdoor or challenging environments. Featuring a Type N connector for audio input and output, this amplifier is easy to set up and use. Manufactured in China, the Viewsonics VSA-601L is a single unit that provides robust performance for your signal amplification needs.