Compact 40mm Iron-Cased Speaker8 impedance; 2W power handling; 0-20kHz frequency range; 94±3dB sound pressure output For easy integration into DIY and embedded systems; High-Frequency Audio OutputSupports full-range audio from 0Hz to 20kHz; delivers clear and accurate sound for multimedia and alert applications; Plug-and-Play CompatibilityWorks directly with Arduino and Raspberry Pi without complex driver circuits; ideal for smart home and automation projects; Durable Iron EnclosureRobust iron casing protects internal components; ensures long service life in repeated use scenarios; Reliable Sound ModuleHigh pass rate and stable performance; suitable for digital displays, printers, and security systems requiring consistent audio alerts