From the Manufacturer: Byte Brothers tools exhibit 3 qualities: Innovation- It moves our company and our customers forward. Top quality- work requires tools that repeatedly perform. Affordable- Tools are useless unless you can afford to buy them. Byte Brothers guarantees these 3 qualities plus offers US based customer support, training and quick upgrade and warranty service. Whether you are in the catacomb, telecom, audio/video. electrical or security field, you will find Byte Brothers products designed for you at a price you can afford. Product Description: All models of the Low Voltage Pro have an "ID" APP that detects Remote ID plugs. Use these ID plugs to identify the location of the various outlets that you are testing. The Low Voltage Pro has 3 ID accessory packs available: This 20 pack for RJ45 outlets; a 20 pack for coax outlets; a "mixed" set that has 10 of each. There is also a Smart Remote kit that lets you test and ID up to 8 RJ45 outlets at the same time.