SOOKOO 2 Pack DC 9-15V HYD-4218 Active Piezo Electronic Alarm Buzzer

GBSTORE 2 Pcs DC 9-15V Active Piezo Electronic Buzzer Alarm

5pack 9v Battery Clips with Bare Leads by Corpco

Icstation DC 12V 85dB Active Piezo Electronic Buzzer Beep Tone Alarm Ringer Continous Sound(Pack of 2)

Cylewet 5Pcs SFM-27 DC 3-24V Electronic Buzzer Alarm Sounder Continuous Sound Beep (Pack of 5) CYT1083

DIYmall 5 Pack HC-SR501 Pir Motion IR Sensor Body Module Infrared for Arduino

10 Pack 9V Battery Clip Connector, T Type Faux Leather Long Cable Housing Connection

2 Pcs 9V Battery Holder with On Off Switch Cap Lead Wires (for 9V Batery)

DIKAVS 5Pcs 3-24V Small Enclosed Piezo Electronic Buzzer Alarm 95DB w/Wires

ELEGOO 3pcs MB-102 Breadboard 830 Point Solderless Prototype PCB Board Kit for Arduino Proto Shield Distribution Connecting Blocks

eBoot 30 Pieces Photoresistor Photo Light Sensitive Resistor Light Dependent Resistor 5 mm GM5539 5539