If your video signal comes from a BNC jack (such as a security camera), but your monitor or TV input is RCA, or if you want to convert an RCA jack to a BNC signal, this will be your best choice The BNC to RCA adapter provides an interference-free jumper function, and is a cost-effective way to provide a secure and reliable connection between male and female CCTV cables without generating static or ghost signals The high-quality nickel-plated copper connector has better corrosion resistance and superior performance, exquisite design, exquisite craftsmanship, stable signal transmission, and a long service life. It is also the best choice for audio and video enthusiasts. Due to the special design of the BNC interface, the connection is very tight, so you don't have to worry about bad interface and poor contact. Widely used in CCTV monitoring systems, such as connecting CCTV cameras, DVRs, standard TVs, PC monitors, etc. 1. Transmit the RVA audio and video male connector to the BNC female connector, using the general conversion of RCA and BNC ports. Used to connect BNC video signals and RCA video signals. 3. Scope of application: AV BNC audio and video interface output and input connection of security equipment\surveillance\background music\converter and other equipment. How to use: With this connector, you can use an ordinary TV to directly watch the surveillance image of the surveillance camera, or use an ordinary TV to directly watch the surveillance image of the hard disk video recorder. Quantity shipped: 5 pieces Size as shown