LED diode 3mm 12V DC Matte Green with 20cm cable

Relay Module DC 5V 10A 2 Channel Low/High Trigger features:
- Channels: 2 (independent protected with Optocouplers)
- Supply voltage: 5V
- Output Current: 10A
- Relay activation current: 15mA ~ 20mA
- Insulation: Yes
- Trigger signal type jumper (low / high)
- LED indicator: For each channel
- Dimensions: 40x 50mm
- It has a jumper that allows to choose type of trigger signal (low / high)
- This module can be controlled directly by the microcontroller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL)

Version compatible with Arduino Nano V3.0
It has an ATMega328P chip running at 16Mhz with bootloader loaded factory.
Characteristic:
- Microcontroller: ATmega328
- Operating Voltage (logic level): 5V
- Input Voltage (recommended): 7-12V
- Digital I / O Pins: 14 (6 PWM outputs)
- Analog Inputs: 8 (A0-A7)
- DC Current per I / O pin 40 mA
- Flash memory: 32 KB (2 KB used by the bootloader)
- SRAM: 2 KB
- EEPROM: 1 KB
- Frequency Clock: 16 MHz
- USB Communication - CH340
- Dimensions: 18 mm x 44 mm

3A DC Converter 1,25-32V Adjustable LM2596 Step Down Module features:

- Based on the LM2596S-ADJ regulator
- Rectification: Asynchronous
- Output Voltage: 1.25v - 32v DC (adjustable)
- Voltage of Input: 3.2v - 35v DC
- Max Output Current: 3A (with heat sink)
- Ripple at output voltage: 30mV
- Frequency: 150KHz
- Max Conversion Efficiency: 92%
- Load Regulation: ± 0.5%
- Voltage Regulation: ± 2.5%
- Operating Temperature: -40ºC to + 85ºC
- Measurements 43x 21x 14 mm

Through-hole LED for 12V DC with black and red 20cm cable.

• Diode type: with cable
• LED lens type: Clear
• Direct diode voltage: 12V
• LED colour: light blue
• The distinguishing feature: 12 V LED with 20 cm RoHS cable
• LED size: 3 mm

ATmega328P Nano V3.0 Adapter Terminal Block Connector features:
- Nano V3.0 Atmega328P adapter with loose connectors and solder pins
- PCB dimensions: 53mm x 35mm

Through-hole LED for 12V DC with black and red 20cm cable.

• Diode type: with cable
• LED lens type: Clear
• Direct diode voltage: 12V
• LED colour: light yellow 
• The distinguishing feature: 12 V LED with 20 cm RoHS cable
• LED size: 3 mm

10x Female-Male Cables 20cm Jumpers Dupont features:
-Length: 20cm
-Quantity: 10 cables
-Connectors have male and female header contacts at either end
-Compatible with male and female connectors 2,54mm
-High quality and good working conditions
-Easy to install and use

This module is an active buzzer for Arduino and emits different sounds at various frequencies.
It does not accept oscillation source, it only receives square waves for drive sound.