Feature: Active buzzer, no frequency signal, only need to offer signal to level can soundSuitable for button prompt, prompt warning and so on Specification: Size: 26 * 21mmVoltage: 5VPort: Digital levelPlatform: , microcontroller Package includes: 10 x Activ..
Feature: Active buzzer, no frequency signal, only need to offer signal to level can soundSuitable for button prompt, prompt warning and so on Specification: Size: 26 * 21mmVoltage: 5VPort: Digital levelPlatform: , microcontroller Package includes: 3 x Active..
Feature: Active buzzer, no frequency signal, only need to offer signal to level can soundSuitable for button prompt, prompt warning and so on Specification: Size: 26 * 21mmVoltage: 5VPort: Digital levelPlatform: , microcontroller Package includes: 5 x Active..
Feature: Active buzzer, no frequency signal, only need to offer signal to level can sound Suitable for button prompt, prompt warning and so on Specification: Size: 26 * 21mm Voltage: 5V Port: Digital level Platform: , microcontroller Package in..