The MALLORY SONALERT part SC628KR is an audio signaling device that operates on 6VDC to 28VDC with a current draw of 23mA. It produces a loud and clear sound output of 78dBA at a frequency range of 2400Hz to 3400Hz. This compact device is designed for easy installation with its screw panel mount feature. It is ideal for various applications requiring reliable and attention-grabbing audio alerts.