Allen-Bradley 855P-B24SEP22 Panel Mount Sounder

Allen-Bradley 855P-B24SEP22 Panel Mount Sounder is a compact, panel-mount audible signaling device from Rockwell Automation’s 855P family. Housed in black, it fits a 22.5 mm panel opening as a 30 mm “SE” size unit and is designed for 12–24 V AC/DC operation (the B24 variant specifies 24 V capability). It provides an audible alert—pulse-tone or continuous-tone—on demand and is intended for local machine status indication and safety signaling on control panels. The 855P panel-mount line emphasizes secure, rear-securing, finger-safe installation and easy integration with other 855P signaling devices such as LED beacons or dual-circuit alarms for coordinated signaling. When configured as the SE 30 mm size, it delivers approximately 72 dB at 1 meter, making it suitable for industrial environments where a clear, single-point alarm is required. This sounder is a dedicated signaling device (not a beacon) and complements Allen-Bradley automation ecosystems for equipment status indications, hazard alerts, and process alarms on panel-mounted control panels.