Compact 27mm Plastic Speaker27mm diameter; 8 impedance; 0.25W power handling; 020kHz frequency range; 88±3dB sound pressure level; ideal for small electronic projects; Easy Integration with MicrocontrollersCompatible with Arduino and Raspberry Pi; no complex driving circuits needed; simple setup for DIY and hobbyist applications; Stable and Durable DesignPlastic construction ensures long service life; high pass rate; reliable performance in various environments; Low Power Consumption 1.8 µA sleep mode current; 2000mAh battery support; suitable for portable and low-power devices; Wide Application SupportPerfect for digital displays, alarms, printers, and smart home devices; not for high-voltage (>50V) systems