2x Buzzer 5V Passive 5 to 12V DC

The DC-DC 25A solid state relay has a 3-32VDC input and a 6-60VDC output. It has a maximum load capacity of 25A.
It has a long operating life and high reliability, a compact size. This relay switches very quickly. Fotek SSR-25 DD 25A DC-DC Solid State Relay 5V-60VDC output 

The Sonoff IFan03 is an intelligent controller for ceiling fans with light that allows us to control it intelligently, either by the eWeLink application, by means of 433MHz RF control or by voice assistants such as Alexa or Google Home.

Create your own scenes, turn on the light and/or the fan and adjust its speed, programming it to the hours you want.

3.5mm Audio Jack Breakout Headphone Video Audio MP3 Jack Module. This female jack connector adapter 3.5mm audio soldered on a PCB board, it is ideal to use in our projects. TRRS connectors are the audio-style connectors seen on some phones, MP3 players and development boards. TRRS stands for "Tip, Ring, Ring, Sleeve", reflecting the fact that unlike a standard stereo connector, this one actually has three conductors and a ground. 

This fingeprint scanner from ADH-Tech combines a highly precise fingerprint sensor module with an onboard MCU and UART interface enabling trivially very connection to any project.

The scanner independently reads and analyses the fingerprint thanks to an MCU algorithm that can send a converted digital signal to a peripheral serial interface for a data read. The onboard MCU algorithm enables operations such as for example a fingerprint enroll.

USB adapter that allows a direct USB connection to your ESP8266 ESP-01 or ESP-01S WiFi module. Based on the CH340 integrated circuit, which is a USB - Serial converter (UART).

The good thing about LiPower is the ability to use rechargeable lithium polymer batteries.
These batteries are smaller, flatter and last much longer than an AAA battery.
Connect a single-cell LiPo battery, turn on the power switch and you will have a 5V supply to power your LilyPad network. It can deliver the current up to 150mA. Protected against the short circuit.
This board has a JST connector, which will be connected to single cell LiPo batteries terminated in JST.
It also has terminals for charging the LiPo battery with LiPo chargers. Each LilyPad was creatively designed to have large connection pads that allow them to sew on clothes.

Relay Module DC 12V 10A 1 Channel Low/High Trigger features:
- Channel: 1 (protected with Optocoupler)
- Supply voltage: 12V
- Output Current: 10A
- Relay activation current: 15mA ~ 20mA
- Insulation: Yes
- Trigger signal type jumper (low / high)
- LED indicator
- Dimensions: 30x 54mm
- Has a jumper that allows to choose type of trigger signal (low / high)

NodeMcu module based on ESP8266 controller and programming in Lua language. 
NodeMcu is equipped with 10 GPIO, PWM, I2C, 1-wire and ADC. ESP8266-12E is an improved version of ESP8266-12. 
It works as a standard WiFi 802.11 b / g / n 2.4 GHz. 
USB communication - the CP2102 chip. Characteristic of ESP 12E: 
- Supply voltage: 3.3V (LOGICAL LEVELS: 3.3V), 
- Supported protocols: 802.11 b / g / n, 
- Network support: 2.4 GHz, 
- Band: 2400 (MHz), 
- Wi-Fi Direct (P2p), Soft Access Point, 
- TCP Stack / Integrated IP, 
- PLLs, Regulators and Integrated Power Management Units, 
- Output Power: 0.15 (W); + 19.5dBm in 802.11b mode,

Mini ESP8266 ESP12E CH340 WiFi Development
NodeMcu module based on ESP8266 controller and programming in Lua language
NodeMcu it is equipped with 10 GPIO, PWM, I2C, 1-wire and ADC
It works as a standard WiFi 802.11 b / g / n 2.4 GHz
Wemos D1 Mini ESP8266 ESP12E CH340 WiFi Wireless Development features:

- Compatible with Arduino, programming with the Arduino IDE
- Power supply voltage: 5V
- LOGICAL LEVELS: 3.3V
- 11 input / output pins
- 1 ADC (input: 0-3.3V)
- Supported protocols: 802.11 b / g / n
- Network support: 2.4 GHz - Band: 2400 (MHz)
- Wi-Fi Direct (P2p), Soft Access Point
- Integrated TCP / IP stack
- PLL, regulators and power management units Integrated