The CPE-522 is a piezo buzzer indicator designed to provide audible signaling in electronic systems. It features a rated voltage of 12 Vdc with an operating voltage range of 3 to 20 Vdc, and operates at a rated frequency of 3.2 kHz (ranging from 2.7 to 3.7 kHz). The device delivers a sound pressure level of 75 dB at 30 cm when operating at rated voltage, with a maximum current consumption of 10 mA. Housed in a compact 25.0 × 24.0 × 10.0 mm package with through-hole pins and a side-port design, the CPE-522 is constructed from PC+10% Glass material and operates reliably across a temperature range of -30°C to +115°C. This buzzer is ideal for alarm systems, notification devices, and industrial control applications where reliable audible feedback is required.