5PC NEU Active buzzer module/Low level trigger/Buzzer control panel #YT

10PC NEU Passive buzzer module KY-006/ active buzzer module KY-012 #YT

5PC NEU Electronic switch control board pulse trigger switch module DC MOS #YT

10PC NEU 5V / 3V passive buzzer #YT

1PC NEU 1/2/4 30A high and low level trigger relay module 5V PLC automation #YT

10PC NEU Set time delay timing chip/trigger delay IC/2s-1000h timing IC #YT

50 PCS 27mm Piezo Elements Sounder Sensor Trigger Drum Disc + wire copper

1PC NEU 1-8S 2-in-1 power display /BB sound low voltage/buzzer #YT