FID-RC522 RF IC Card Sensor Module is a reliable and efficient solution for secure access control systems. Operating at a frequency of 13.56MHz, it supports various mifare card types, ensuring compatibility and performance.

• Current: 13-26mA / DC 3.3V
• Idle Current: 10-13mA / DC 3.3V
• Sleep current: <80uA
• Peak current: <30mA
• Operating Frequency: 13.56MHz
• Supported card types: mifare1 S50, mifare1 S70, mifare UltraLight, mifare Pro, mifare Desfire
• Environmental Operating temperature: -20-80 degrees Celsius
• Dimensions: 40mm × 60mm

Perfect for enhancing the security of your access control systems.

• Wide Voltage Range: Compatible with DC 5-24V, ideal for various voltage-based systems
• Adjustable Delay Close Time: Delay time adjustable between 33 to 300 seconds for versatile applications
• Long Detection Range: Can detect motion from up to 4-5 meters
• Output Connectors Included: Comes with both a DC male plug and a DC female plug for easy integration

• Dual bases for all Wemos D1 Mini modules and shields.
• Duplicate I/O and power supply for enhanced flexibility.
• Designed for 3.3V I/O compatibility only.

• High Power Capacity: Max. allowable voltage up to 250VAC/110VDC.
• Compact Design: Small size suitable for high-density P.C. board mounting.
• Relay Compatibility: Can work with any brand relay.
• Indication LED: Provides relay status indication for easy monitoring.

The 4-ARRAY Infrared Tracking Obstacle Avoidance Car Sensor is designed for Arduino projects, offering reliable tracking and obstacle avoidance capabilities. This sensor operates at 3.3V to 5V DC, providing adjustable detection distances between 1 mm to 60 cm. Ideal for robotics and smart car applications.

Key Features:

• Working Voltage: 3.3V to 5V DC

• Current Requirement: Use more than 1A power supply

• Working Temperature: -10°C to +50°C

• Detection Distance: 1 mm to 60 cm adjustable

• Installation: M3 screw aperture

• Control Plate Size: 44 mm x 30 mm x 8.5 mm

• Small Board Sensor (Obstacle Avoidance): 11 mm x 25 mm x 10 mm

• Small Plate Sensor (Tracking): 20 mm x 11 mm x 15 mm

The MQ-6 LPG Gas Sensor Module is designed to detect LPG and Butane gases with high accuracy. Operating at 5V, this sensor provides both TTL digital and analog outputs, making it ideal for environmental monitoring and safety systems.

Key Features:

• Operating Voltage: +5V
• Gas Detection: LPG, Butane
• Analog Output Voltage: 0V to 5V
• Digital Output Voltage: 0V or 5V (TTL Logic)
• Preheat Duration: 20 seconds
• Versatile Use: Can be used as both Digital or Analog sensor
• Adjustable Sensitivity: Sensitivity of the Digital pin can be adjusted using the potentiometer

• Compatibility: Works with ESP8266 D1 Mini Pro and NodeMcu
• Functionality: Expands the functionality of your board
• Compact Design: Ideal for enhancing your projects

• Dual-axis XY Joystick for precise control
• 2 potentiometers for controlling two axes
• Integrated switch for additional functionality
• Compact size, ideal for Arduino projects

• USB to TTL Serial Converter for easy PC connection to serial devices
• Supports USB 1.1, 2.0, and 3.0 communication with full-speed data transfer
• 500mA self-healing fuse for added protection
• 3.3V and 5V power supply interfaces for different voltage systems

Discover the LCD Blue Display 1602, perfect for your Arduino projects in Bangladesh. This standard blue backlight HD44780 LCD supports 16 characters wide and 2 rows in white text on a blue background. Featuring an I2C serial interface, it simplifies data display with minimal resource usage.

• High-performance metal detection
• Easy to use with sound and light alarm modes
• Low power consumption with 40mA operating current
• Compact PCB size for easy integration into projects

The XH-M603 12-24V Lithium Battery Charger Protect Board is a reliable charging control module designed to safeguard and manage lithium batteries. With an input voltage range of DC 10-30V, it ensures precise control and protection for your storage batteries.

• Model: XH-M603
• Input Voltage: DC 10-30V
• Display Precision: 0.1V
• Control Precision: 0.1V
• Output Type: Direct output
• Application Fields: 12-24V storage battery
• Size: 82 x 58 x 18mm

• 16-bit bidirectional I/O expansion for microcontrollers
• Supports I2C (MCP23017) up to 1.7 MHz and SPI (MCP23S17) up to 10 MHz
• Configurable interrupt system with INTA & INTB pins
• Three hardware address pins allow up to 8 devices on the same bus

• Input Voltage: AC 85 ~ 265V (50/60Hz) for wide compatibility.
• Output Voltage: DC 12V with a tolerance of ±0.2V.
• Output Current: 400mA.
• Power Output: 4.5W.

• Dual USB Output: Supports fast charging for two devices simultaneously.
• Type-C and Micro USB Inputs: Compatible with multiple charging cables.
• Integrated Display: Monitors power levels for user convenience.
• Overcharge Protection: Ensures battery safety and longevity.

• Dual-Output: Provides both temperature and humidity control outputs.
• High Precision: Control accuracy of 0.1°C for temperature and 0.1%RH for humidity.
• Wide Detection Range: Temperature range of -20°C to 60°C and humidity range of 0% to 100% RH.
• Relay Output: Maximum output capacity of 10A for controlling devices.