• Dual-channel logic level converter for bidirectional communication between 3.3V and 5V devices.
• Supports UART, SPI, and I2C communication protocols.
• Compact size of 16mm x 11mm x 3mm, making it ideal for space-constrained applications.
• Transmission rate of 28,800 bps, suitable for most communication needs.

• Dual Voltage Compatibility: Works with both 3.3V and 5.0V power supply, offering flexibility in different setups.
• Signal Compatibility: Supports both 3.3V and 5.0V signal levels, making it adaptable to a variety of systems.
• Industrial Design: Uses imported chips with industrial-grade design, offering superior anti-interference ability.
• Wide Operating Temperature: Can operate in harsh environments with a temperature range from -40°C to +85°C.

• Wide supply voltage range: 3V to 5V
• Chip: X9C103S
• Compact PCB board size: 2.7 * 1.3 cm
• 10K span potentiometer for precise adjustments

• RS232 to RS485/RS422 Converter: Easily connect any RS485 or RS422 device to a COM port.
• Ideal Solution: Seamless communication between serial port and RS485/RS422 devices.
• No External Power Supply: Uses unique serial charge pump drive technology.
• Real Three-Wire Communication: TXD, RXD, GND – no need for serial port initialization.

• 10-segment LED bar graph with multi-color display (red, yellow, green, blue)
• Ideal for battery level and power indication
• Compact design with standard 2.54mm pin pitch
• Efficient power usage with low forward current

• Operating Voltage: 3.3V (DC)
• Communication Protocol: UART
• Serial Communication Baud Rate: 9600
• Speed Limit: 500m/s

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

• 800×480 high resolution for clear display
• Resistive touch control for precise input
• Supports Raspberry Pi, BB Black, and other mini-PCs
• Plug and play with Windows (driver-free)

• Dot Laser for precise applications
• Low Power Consumption at 5mW
• Compact Design with a 6mm OD for easy integration
• Stable Operation at a 650nm wavelength

• Accurate temperature and humidity sensing
• I2C and one-wire bus communication
• Wide temperature measurement range (-40°C to 125°C)
• Compact and easy to integrate with Arduino

• High-Sensitivity GPS: Utilizes the imported NEO-M8N GPS module with high signal strength.
• Ceramic Active Antenna: Offers excellent amplification and filtering for strong signal reception.
• Data Backup: Includes a backup battery and EEPROM to save configuration parameters.
• LED Indicator: Equipped with LED lights for easy status indication.

• Input Voltage Range: 4V to 38V DC (up to 38V).
• Output Voltage Range: 1.25V to 36V DC (adjustable).
• Maximum Output Current: 5A.
• High efficiency of up to 96%.

• Ultra-low power consumption (<50uA quiescent current)
• Wide working voltage range (DC 4.5V–20V)
• High sensitivity with <100° detection angle
• Compact and lightweight design

• High-quality materials for guaranteed durability
• Chip-designed card reading circuit
• Low voltage, compact contactless card reader module
• Communicates with host via SPI mode

• High-precision magnetic field sensing
• Atmospheric pressure measurement with BMP180 sensor
• Wide pressure range: 300-1100hPa
• Standard IIC communication protocol for easy integration

• Input Voltage: 1V ~ 5V
• Output Voltage: 5V
• Output Current: 500mA
• High Conversion Efficiency: Up to 96%