Industrial SC628P Alarm

Mallory Sonalert SC628P is an industrial panel‑mount piezo buzzer alarm built for reliable audible signaling in control panels, instrumentation, and machinery. The 42.98 mm round face sits in a black nylon housing with panel mounting and wiring options that include screw terminals and 0.250 in quick‑connect tabs for easy installation. It operates from 6 to 28 VDC and draws up to 16 mA, making it suitable for a wide range of low‑ to mid‑voltage signaling systems. The transducer emits a fast‑pulse tone at a resonant frequency of about 2.9 kHz, a common characteristic for Sonalert alarms. In terms of loudness, the unit is listed at about 68 dB at 6 V on some listings, while Mallory data references sound levels near 80 dBA at higher voltages, reflecting the typical increase in loudness with supply voltage. This SC628P variant is part of Mallory Sonalert’s range of audible indicators used as machine annunciators, operator alerts, and safety signaling devices where a compact, self‑contained alert is advantageous. Related variants in the SC628 family, such as the SC628P‑BTR, share the same basic form factor and voltage range, ensuring compatibility across similar panel installations and signaling tasks.