The AT89C2051 is a low-voltage, high-performance CMOS 8-bit microcontroller from Atmel, featuring 2KB of flash programmable and erasable read-only memory. This microcontroller is designed using high-density nonvolatile memory technology and is compatible with the industry-standard MCS-51 instruction set. It provides a highly flexible and cost-effective solution for many embedded control applications.

• 4-Channel relay interface board with independent control
• High-current relay support: AC250V 10A / DC30V 10A
• Opto-isolated inputs for enhanced safety and noise reduction
• LED indicators for real-time relay output status

• Arduino IDE Support: Compatible with Arduino IDE 1.0+ (OSX / Windows / Linux)
• Flexible Power Options: Supports 5V via USB or 7-24V external power supply (Recommended 12V or lower)
• Built-in Voltage Regulator: 500mA 5V onboard regulator with automatic power selection

• Utilizes the TCRT5000L IR sensor for precise tracking
• Output mode: Digital signal (High/Low levels)
• Measures distance from 1cm to 1.5cm
• Detects black lines with a low-level output and white lines with a high-level output

• USB Type-C Input: Supports 5V Type-C USB input for easy charging and power supply.
• Overcharge Protection: Prevents overcharging with a cut-off voltage of 4.28V.
• Over-discharge Protection: Stops discharge when the battery voltage drops to 3.2V.
• Maximum Output Current: Can provide a charging current of up to 1A (1000mA).

• 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

Specifications:

• Operating Voltage: DC 5V - 36V
• Trigger Source: Digital high-low (DC 3.3V - 20V), supports microcontroller IO port, PLC interfaces, DC power, and PWM signal (frequency 0-20KHz)
• Output Capacity:
  • Voltage: DC 5V - 36V
  • Current: 15A continuous at room temperature, up to 30A with auxiliary cooling
  • Power: 400W
• Operating Temperature: -40°C to 85°C

Package:

1x 15 A 400 W high-power MOS FET trigger switch drive module PWM regulator control panel

• High Power Output: Supports up to 1500W with a maximum current of 30A
• Wide Input Voltage Range: Accepts DC 10V - 60V input
• Adjustable Output Voltage: 12V - 90V continuously adjustable
• Constant Current Mode: Adjustable 0.8A - 20A

Product Overview: The Arduino Uno - R3 (Original) Italy is a powerful microcontroller board based on the ATmega328P, designed for a variety of electronics projects. It’s ideal for both beginners and professionals.

Key Features:

• Microcontroller: ATmega328P
• Operating Voltage: 5V
• Input Voltage (recommended): 7-12V
• Input Voltage (limit): 6-12V
• Digital I/O Pins: 14 (6 provide PWM output)
• PWM Digital I/O Pins: 6
• Analog Input Pins: 6
• DC Current per I/O Pin: 20 mA
• DC Current for 3.3V Pin: 50 mA
• Flash Memory: 32KB (0.5 KB used by bootloader)
• SRAM: 2 KB
• EEPROM: 1 KB
• Clock Speed: 16 MHz
• LED_BUILTIN: 13
• Dimensions: 68.6 mm x 53.4 mm
• Weight: 25 g

Specifications:

• For Model: DS18B20
• Type: waterproof temperature sensor
• Feeler: stainless steel temperature sensor
• Temperature measuring range: -55 ° C -125 ° C
• Accuracy over the range of -10 ° C - 85 ° C: ± 0.5 ° C
• Adjustable resolution: 9 - 12 bit
• Voltage supply: 3.0 - 5.5V

Package:

1x DS18B20 Temperature Sensor Adapter Shield

• 3.2-inch TFT LCD screen with Ultra HD resolution
• Screen resolution: 480x320 pixels
• High-quality backlight with 6 white LEDs
• Wide power supply range (5V/3.3V)

• Compatible with ESP8266 D1 Mini Pro for Wi-Fi applications.
• Supports real-time clock (RTC) and SD card for data logging.
• Includes male and female pin headers for easy connections.
• Battery type CR1220 (Battery not included).

• DC-DC Step-Up BOOST Module: Converts DC voltage from 1.5V-12V to 12V output with high efficiency.
• High Efficiency: Efficiency ranges from 57% to 92%, ensuring effective power conversion.
• Wide Input Voltage Range: Works with input voltage between 1.5V and 12V, making it versatile for various applications.

• Dual-core ARM Cortex M0+ processor, up to 133 MHz
• 264kB SRAM and 2MB Flash memory
• Integrated WiFi (IEEE 802.11 b/g/n) and Bluetooth 5.2 (not software supported at launch)
• USB 1.1 Host and Device support

• Supports both WiFi and Bluetooth
• Compatible with Arduino
• Micro USB connection for easy setup
• 1 analog input (3.2V max input)

• Integrated TCS3200 color recognition chip for accurate color detection.
• Supports DC 3-5V input voltage.
• Produces an output frequency voltage of 0-5V.
• Equipped with bright white LED lights for better color measurement.