9V Battery Snap Clip Connector

Rocker Switch 10*15mm SPST 2PIN ON/OFF Boat Rocker Switch 1A/250V

Integrated 12V active buzzer 12 x 9.5mm continuous...

Single cell lithium charger with auto switchover. 

5mm LED white light emitting diode, 5 LEDs per pack

Working current: 20 (mA)

Working voltage: 1.7V-2.1V

3-24V Piezo Electronic Tone Buzzer Alarm 95DB Continuous Sound

1.25V - 37V Output @ 3A DC-DC 3-40V Input Step Down Adjustable Power Supply 3A peek power, 2A constant current.

Digital Touch Sensor TTP223B Capacitive Touch Module