Signal relays are electromechanical switches designed to control the flow of low-power signals or currents in electronic circuits. They are characterized by their ability to handle relatively small signal currents, typically up to 2 amps, and are used in applications where precision switching, low signal distortion, and high reliability are required. Signal relays consist of a coil, an armature, and contacts housed within a sealed enclosure. When energized, the coil generates a magnetic field that attracts the armature, causing the contacts to make or break the electrical connection. Signal relays find applications in telecommunications, instrumentation, automated test equipment, medical devices, and industrial control systems where they are used for functions such as signal routing, switching, and isolation in electronic circuits.