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Logitech USB Unifying Receiver - 2 Pack

Applications: This device can be wildly used to wireless remote control,wireless audio,somatosensory devices, RFID, NFC, smart grid, smart home, etc..
NRF24L01 Wireless Transceiver Module with 125 Communications channels, multi-point communication and frequency hopping to meet the communication....
NRF24L01 wireless transceiver module built-in 2.4GHz antenna, small size, 15x29mm (including antenna).
it can be directly connected to a variety of....
The operating voltage of the wireless module is generally 3.3v, while the ordinary 51 microcontroller is 5v. This module is convenient to shop....
NRF24L01 Socket Breakout Adapter with NRF24L01 Wireless Transceiver Module.

The sound sensor is suitable for assembly, and installed on various small equipment like microphone and robot.
Microphone sound sensor module possess small size, more stable performance and simpler installation.
Sound sensor module have small volume and low output noise, the fixed gain is 20dB, support 3.3v and 5v.
Low power consumption of sensor is easy to control, more stable and more efficient.
This module uses professional microphone amplifier IC, which possess high sensitivity.

【One-year after-sale warranty】The PWM to voltage module converts PWM digital signals to 0 to 10V analog signals. It can be used to switch the signal interface of PLC or other industrial control board. Adjust the output voltage by adjusting the PWM duty cycle. The module is small in size and easy to apply in different places.003cbr003e.
Using MCU embedded technology. Easy to operate, can be fine-tuned by potentiometer.003cbr003e.
Select the PWM signal input level range by short circuit. The module is small, easy to carry and easy to use.003cbr003e.
(current greater than 100mA)，PWM signal receiving frequency range: 1KHZ-3KHZ.
When power on for the first time, it is best to do a calibration and debugging: find a signal with a 50% duty cycle and connect it to PWM and GND. Jumper caps set the corresponding voltage range. When the frequency is 1KHZ-3KHZ, use a multimeter to measure the two ports of VOUT and GND. At this time, the meter displays about 5V. Adjust the potentiometer on the board so that the multimeter displays 5.00v.003cbr003e.

This module is the finished module of transformer for small scientific production..
The input voltage is DC 3.7-7.4V and can output high voltage of DC 800-1000KV..
According to the tesla coil principle, the module outputs high voltage pulse current, small volume and high efficiency..
The peripheral circuit is simple (simply connect the switch and install the battery), the discharge intensity is violent..
It can be used as high voltage source for high school science experiment, electronic instrument and anion generator..

The DFPlayer Mini MP3 Player For Arduino is a small and low price MP3 module with an simplified output directly to the speaker..
It supports common audio formats such as MP3, WAV and WMA..
The module can be used as a stand alone module with attached battery, speaker and push buttons or used in combination with an Arduino UNO or any other....

The module can output high voltage pulse current, small size and high efficiency.
This module is the finished module of transformer/booster for small scientific production.
The input voltage is 3.6V/4.8V DC and will output 40kV-50kV AC high voltage.
It can be used as security equipment accessories, gas range ignition, or for electrostatic adsorption experiment.
The peripheral circuit is simple, simply connect the switch and battery, and the discharge is great.

The ESP32-CAM-MB module is a small camera module with a size of 39.8MM*27MM.
ESP32-CAM-MB adopts Micro USB interface, convenient and reliable connection method, convenient to apply to various IoT hardware terminal occasions.
ESP32-CAM-MB module can work independently as the smallest system.
WiFi+Bluetooth dual-mode development board based on ESP32 design, using PCB on-board antenna, with 2 high-performance 32-bit LX6CPU, using 7-level pipeline architecture, main frequency adjustment range 80MHz to 240Mhz.
Ultra-low power consumption, deep sleep current is as low as 6mA. It is an ultra-small 802.11b/g/n Wi-Fi + BT/BLE SoC module.

12864 LCD Display Module 128x64 Dots Graphic Blue Color Backlight.
This product is a LCD display module with blue backlight, small and light appearance, suitbale for copiers, fax machines, laser printers, industrial test equipment, networking.
Package included： 1PCS x 5V LCD Display Module 128x64 Dots Graphic Matrix LCD 12864 Blue Backlight New.
If You Are Not Satisfied with Your Purchase for Any Reason, Please Feel Free To Contact Us at the Buyer Center or Support Email, 24/7 Quick Reply..

The AT-09 is a module that contains a BLE chip (CC2541)..
This small size Bluetooth 4.0 TTL transceiver module allows your target device communicate with for iPhone/iPAD, IOS 6 or Android 4.3 above devices..
This module allows to perform serial communication with the BLE chip thanks to an Rx and a Tx pin..
When the Bluetooth connection is not established, the baud rate, name, and pairing password can be set by the AT command. After the setting, the parameter is saved after power-off, and the Bluetooth connection automatically switches to the transparent transmission mode..
The module is also very similar to the HM-10 module and is also compatible with it so if you have some experience with the latter, you will get started quickly with the AT-09..

3 x Transmitter module (433MHz) & 3 x Receiver module(433Mhz).
These modules are used for projects when you need to communicate wirelessly between 2 devices.
It is possible to increase the range by adding a small length of cable which the device will use as an aerial..
VCC voltage module operating voltage and good power filtering.
Antenna position has also affected the reception of the module, the installation, the antenna as possible straight away from the shield, high pressure, and interference source.