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

The CP2102 USB to TTL UART Serial Converter is ideal for reliable and versatile communication between your USB and serial devices. Key features include:

• 3.3V and 5V dual power output.
• Self-recovery fuse for protection against short circuits.
• Compatible with 3.3V and 5V Arduino boards.
• Power, data reception, and data transmission indicator LEDs.
• 640 byte receive buffer and 512 byte transmit buffer.
• Supports baud rates from 300 bps to 1 Mbps.

• Open-Type Vibration Sensor for precise motion detection
• Comparator Output (0 and 1) for easy digital signal processing
• Wide Voltage Range (3V - 5V) supports various microcontrollers
• Strong Driving Ability of over 15mA output current

• Battery-Powered Smoke and Fire Alarm (Battery not included)
• Environmentally Friendly: No harmful radiation, smells, or risks
• Low Power Consumption: Sensor's service life of about 10 years
• Photoelectric Chamber: Ensures early detection of smoke from all directions

The DS1307 Real Time Clock Module (Tiny RTC) is a compact and efficient solution for real-time clock functionality in various projects. Key features include:

• Fully assembled module
• Accessed via the I2C protocol
• Two wire I2C interface
• Displays Hour: Minutes : Seconds AM/PM and Day Month, Date - Year
• 1Hz output pin
• 56 Bytes of Non-volatile memory available to user
• Size: 2.9cm x 2.6cm (1.14inch x 1.02inch)

This package includes one DS1307 Real Time Clock Module (Tiny RTC).

• 16-bit resolution ADC for precise analog-to-digital conversion.
• Four analog input channels for flexible measurement.
• Programmable Gain Amplifier (PGA) for improved sensitivity.
• Operating voltage range: 2.0V to 5.5V, compatible with both 3.3V and 5V systems.

• Adjustable Output Voltage: 0.8V to 30V
• Adjustable Output Current: Maximum 5A
• High Conversion Efficiency: Up to 95%
• Wide Input Voltage Range: 5V to 32V

• 8 Bi-Directional Channels: Allows seamless voltage shifting between 3.3V and 5V logic devices.
• Automatic Direction Sensing: No need for manual configuration, simplifying circuit design.
• Compact & Lightweight: 2.6 cm x 1.6 cm in size, weighing only 2.38g.
• High-Quality PCB: Ensures reliability and durability for long-term use.

• Voltage: 3.3V
• Resolution: 500dpi
• Backlight Color: Blue
• Interface: TTL Serial

• Built-in WS2812 LED chip.
• 4pcs 5050 RGB full-color highlighting.
• Compatible with Arduino microcontroller.
• Digital ports for easy connection.

• Imported normally-open reed switch for reliable performance
• Comparator output with clear signal and clean waveform
• High driving ability with more than 15mA output

• 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

• Converts SOP28, SOIC28, and SO28 to DIP28 format
• 1.27mm pin pitch for compatibility with various ICs
• 28-pin socket for versatile use
• Suitable for testing and programming ICs

• 16pcs 5050 RGB LEDs with built-in WS2812 chip for full-color effects
• Individually addressable LEDs with digital control
• Operates at 5V, suitable for low-power applications

Introducing the GSM / GPRS / GPS Tracker. Ideal for personal, vehicle, and asset tracking, this versatile device offers:

• Quad-band GSM/GPRS 850/900/1800/1900MHz
• High GPS accuracy of at least 3.3m
• Applications: Emergency (SOS), geo-fence boundary crossings, low battery alerts, scheduled route planning

• Brand New and High Quality
• Resolution: 128x64
• Display Area: 29.42 x 14.7mm (1.16" x 0.58")
• Operating Voltage: 3.3V to 5V

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

The CP2102 USB to TTL UART Serial Converter is ideal for reliable and versatile communication between your USB and serial devices. Key features include:

• 3.3V and 5V dual power output.
• Self-recovery fuse for protection against short circuits.
• Compatible with 3.3V and 5V Arduino boards.
• Power, data reception, and data transmission indicator LEDs.
• 640 byte receive buffer and 512 byte transmit buffer.
• Supports baud rates from 300 bps to 1 Mbps.

• Open-Type Vibration Sensor for precise motion detection
• Comparator Output (0 and 1) for easy digital signal processing
• Wide Voltage Range (3V - 5V) supports various microcontrollers
• Strong Driving Ability of over 15mA output current

• Battery-Powered Smoke and Fire Alarm (Battery not included)
• Environmentally Friendly: No harmful radiation, smells, or risks
• Low Power Consumption: Sensor's service life of about 10 years
• Photoelectric Chamber: Ensures early detection of smoke from all directions

The DS1307 Real Time Clock Module (Tiny RTC) is a compact and efficient solution for real-time clock functionality in various projects. Key features include:

• Fully assembled module
• Accessed via the I2C protocol
• Two wire I2C interface
• Displays Hour: Minutes : Seconds AM/PM and Day Month, Date - Year
• 1Hz output pin
• 56 Bytes of Non-volatile memory available to user
• Size: 2.9cm x 2.6cm (1.14inch x 1.02inch)

This package includes one DS1307 Real Time Clock Module (Tiny RTC).