2030 Cavity Speaker, 8Ω 2W 21635 Grove UART *1

Grove UART *1

but they also have many other features and differences

Here is a brief description of what is included in the kit:

With PID high-speed 100ms rapid temperature calibration

Voltage range: DC24V~50V

2030 Cavity Speaker, 8Ω 2W 21635 Grove UART *12030 8 2W cavity speaker compact size high quality sound built in Sound Cavity Specifications Frequency band 0 ~ 20KHz impedance 8 15% power 2W operating temperature 20 ~ 55 Wire Spec 4PIN PH1. 25 connector, approx. 150mm cable length size 20 30 5. 5mm Waveshare products support Including but not limited to: 8DP CAPLCD 8inch 768x1024 LCD 9. 3inch 1600x600 LCD 9. 7inch 768x1024 LCD 10. 1DP CAPLCD 10. 4HP CAPQLED Compact size, High quality sound Similar