The MALLORY SONALERT part SC250NR is an audio signaling device that is designed to provide an audible alert in various applications. It operates at a voltage range of 60VDC/60VAC to 250VDC/250VAC, and consumes a low current of 18mA. With a sound output of 80dBA, it can effectively grab attention and provide clear auditory cues. The frequency range of the device is from 2400Hz to 3400Hz, ensuring a distinctive and easily distinguishable sound. This device is panel-mounted, requiring a screw mounting mechanism for secure installation.