The MQ-4 Gas Sensor Module is designed to detect natural gas and methane, operating at a voltage of 5V. This module is ideal for environmental monitoring and safety systems. Key features include:

• Sensor Type: Semiconductor
• Operating Voltage: VCC - 5V±0.1
• Digital Output (DO): TTL 0 and 1 (0.1 and 5V)
• Analog Output (AO): 0.1-0.3V (relative to pollution), max 4V at high concentration
• Gas Detection: Natural gas/Methane
• Detection Concentration: 200-10000ppm
• Interfaces: 1 TTL input (HSW), 1 TTL output (ALR)
• Heater Consumption: <750mw
• Operating Temperature: 14 to 122°F (-10 to 50°C)
• Humidity: <95% RH
• Sensing Resistance: 10KΩ-60KΩ (1000ppm CH4)
• Load Resistance: 20KΩ
• Preheat Time: Over 24 hours
• Encapsulation: Bakelite, Metal cap

• 16 characters by 2 lines black-on-green display.
• Uses the widely known HD44780 parallel interface chipset.
• Freely available interface code for easy integration.
• Blue backlight with white text for better visibility.

Enhance your Arduino projects with our Rotary Encoder Module. This versatile module allows counting in both positive and reverse directions by rotating the encoder, offering unlimited rotation counts. With a built-in reset button, you can easily reset to the initial state for accurate measurements.

• Working Voltage: 5V
• Material: Electronic components + PCB
• Main Colour: Black
• Size: Approx. 25 x 20 x 30mm

Package Includes: 1 x Rotary Encoder Module

Product Overview: The nRF24L01+ 2.4GHz Wireless Transceiver Module is designed for high-performance wireless communication, perfect for a variety of applications.

Key Features:

• I/O accepts 5V level input
• Low working voltage: 1.9 ~ 3.6 V
• Wireless rate: 1 or 2 Mbps
• SPI interface rate: 0 ~ 8 Mbps
• Transmit power: +0 dB
• 125 optional channels
• Transmission distance: up to 100 meters in open outdoor environments
• Package includes: 1x nRF24L01+ 2.4GHz Wireless Transceiver Module

• High Power Capacity: Supports up to 3000W
• Wide Voltage Regulation: Adjustable range from 10V to 220V
• Imported Thyristor: Uses a high-quality 26A thyristor for durability and efficiency
• Energy Efficient: 90% use efficiency

• 120° detection angle for wide coverage
• 5m reaction distance for motion sensing
• Compact size with HDPE material for durability
• Lightweight and easy to integrate into projects

• I2C Interface: Enables easy communication with the WeMos D1 Mini.
• Wide Power Supply Range: Supports up to 15V DC motor power supply.
• High Current Output: 1.2A (average), 3.2A (peak) per channel.
• Motor Control Modes: Supports CW, CCW, short brake, and stop modes.

• Operates at 125KHz frequency for reliable RFID detection
• TTL level RS232 interface for easy microcontroller integration
• Low power consumption, working at <50mA
• Effective receiving range of 20-50mm, depending on the environment

• Adjustable gain of 1.5 to 1000x
• Adjustable offset
• 120kHz bandwidth (gain = 100x)
• Input signal range of 100uV – 300mV

• 2-channel relay module for controlling AC and DC loads
• Low-level trigger for easy microcontroller interfacing
• Compatible with Arduino, Raspberry Pi, ESP8266, ESP32, and other microcontrollers
• Capable of switching high-power loads up to 250V AC @ 10A or 30V DC @ 10A

• Triple output: 3.3V, 5.0V, and 12V
• 3.3V and 5V outputs with +/-0.05V tolerance
• 800mA max load current for 5V output
• Easy to use with multiple input and output pins

The Vibration Sensor Module for Arduino is an open-type module designed to detect vibrations with high sensitivity and accuracy. It features a wide voltage comparator and is easy to integrate into various projects requiring vibration detection.

• Open-Type Vibration Sensor Module
• Comparator output: Signal clean, good waveform, strong driving ability (>15mA)
• Working Voltage: 3V to 5V
• Output Form: Digital switch output (0 and 1)
• Fixed bolt hole for convenient installation
• Small Board PCB Size: 3.1 cm x 1.4 cm
• Uses LM393 wide voltage comparator
• Adopts SW-18010P Vibration Sensor

Package Includes: 1x Vibration Sensor Module for Arduino

• High Sensitivity: Maximum sensitivity at 570 nm with a wide half-angle of ±60° for better light detection
• Ambient Light Detection: Ideal for measuring ambient light intensity
• Visible Light Spectrum: Sensitive to visible light, while inhibiting infrared (IR) spectra
• Versatile Application: Can be used in applications where light intensity needs to be measured, such as in lighting control systems or environmental monitoring

• Condition: 100% Brand New with High Quality.
• Compact Size for easy integration.
• LM2596S Converter IC for efficient operation.
• Output Voltage Adjustment: Easily adjustable using a potentiometer.

• Output Power: 100mW (Type A) / 500mW (Type B/C/D)
• Frequency Range: 50Hz - 18KHz
• Receiving Frequency: 87.0MHz - 108.0MHz
• Equivalent Noise: >30dB

• 32-bit RGB full color LED module
• Utilizes WS2812B chips with built-in LED control
• 5050 package RGB full color highlight LEDs
• Simple control via a single IO port