100dB Electronic Piezo Alert Buzzer, 3–28V DC Security Alarm Sounder PAL-328N

The PAL-328N is an advanced electronic piezo alert buzzer designed for industrial security and alarm applications. This compact audible signal device delivers compelling sound output with minimal current draw, operating reliably across a wide voltage range from 3V DC to 28V DC at just 20mA maximum. The piezo technology provides high reliability and exceptional longevity, making it ideal for intrusion detection systems, access control alerts, and general-purpose security signaling in industrial and commercial settings.

Sound output scales proportionally with input voltage, ranging from 68dB at minimum voltage up to over 100dB at 28V DC (measured at 1 foot). The device features a multi-functional mounting method with included nut for flexible installation. UL recognized for safety compliance, the PAL-328N operates in free air environments within a temperature range of –13°F to 158°F (–25°C to 70°C). This piezo alert is not suitable for underwater or submerged applications.

• 100dB sound output at 28V DC—loud, attention-grabbing alert for security and alarm systems
• Wide voltage range (3–28V DC)—compatible with multiple power supply configurations and low-power applications
• Minimal current draw (20mA max)—efficient operation reduces power demands on security circuits
• High reliability and long lifespan—piezo technology delivers 250 hours expected life with no moving parts
• UL recognized security alarm—trusted for industrial intrusion and access control applications
• Multi-functional mounting with nut—flexible installation for various enclosure and panel designs