NEW INVENTORY FROM FACTORY: The Modulation / Signal Meter is a specialized device designed for use with specific CB radios such as the 2980DX, 2985DX, 2995DX, and Connex Saturn CX-33SSB. This meter allows users to accurately measure the modulation and signal strength of their mobile/in-vehicle radios, ensuring optimal performance and communication capabilities. With the Connex brand name known for its quality and reliability, this meter is a valuable tool for CB radio enthusiasts looking to maximize their communication experience.