• 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

• High-precision barometric pressure sensor for accurate air and water level detection
• Supports 3.3V-5V operation, making it compatible with Arduino and other microcontrollers
• 0-40KPa pressure range, ideal for liquid level and air pressure measurement
• Compact size (19x18mm) with a 2mm fixing hole for easy installation

• 64 RGB full-color LEDs with WS2812 chips.
• Ideal for creating vibrant and dynamic lighting effects.
• Compatible with Arduino microcontroller platforms.
• Digital input for smooth and precise control.

• Onboard Precision Micro Voltage Transformer
• High-Precision Operational Amplifier Circuit for exact signal sampling and compensation
• Adjustable Output Mode for measuring AC voltage up to 250V
• Output Signal: Sine wave with a median (DC component)

• Compatible with the UNO IDE 1.0+ (OSX/Win/Linux)
• Powered via USB or external sources (5V or 7-35V, 12V recommended for optimal performance)
• On-board 500mA 5V Regulator for stable power supply
• Integrated Micro USB port for easy programming and power

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

Empower your IoT and electronics projects with the ESP32 Development Board. Featuring a 32bit dual-core 240MHz processor, this versatile board supports WiFi, Bluetooth, and fully integrates with the Arduino Programming IDE, making it ideal for a range of applications.

• Supply Voltage: 2.2V～3.6V
• Operating Temperature: -40°C～85°C
• Operating Current: 80mA
• Supports LWIP protocol and FreeRTOS
• Three Modes: AP, STA, and AP+STA
• Compatible with Lua programming
• Processor: 32bit dual-core 240 MHz Tensilica LX6
• SRAM: 520 KB, Flash: 16 MByte
• Wi-Fi Standards: FCC/CE/TELEC/KCC
• Wi-Fi Protocols: 802.11 b/g/n/d/e/i/k/r
• Bluetooth Protocols: BLEv4.2 BR/EDR
• Bluetooth Audio: CVSD and SBC
• Peripheral Interfaces: UART, SPI, I2S, ADC, DAC, I2C
• On-Chip Sensors: Hall Effect, Temperature
• Weight: 9g
• Size: 51.6mm x 28.5mm

• 3.2-inch 480x320 TFT LCD screen with high-quality image display and wide viewing angle.
• Equipped with SD card socket and SPIFLASH circuit for enhanced functionality.
• Compatible with Arduino UNO & MEGA 2560 development boards.
• Supports UTFT, UTFT_Buttons, and Utouch libraries for easy integration.

• Wide Input Voltage Range: Operates with DC 5V to 12V input voltage.
• High Power Output: Delivers 120W of power for induction heating.
• Efficient Induction Heating: Designed for high-frequency induction heating applications.
• Compact Size: 8x4cm in size, easy to integrate into various setups.

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

Specifications:

• System: ESP8266 in the form of the ESP-12F module
• Flash: 4MB
• Power supply: 3.3V or 5V from the USB port
• Built-in 2.4GHz 802.11 b/g/n WiFi communication
• WiFi modes: AP (Access Point), STA (Standalone), AP+STA
• Supported technologies: TKIP, WEP, CRC, CCMP, WPA/WPA2, WPS
• 11 GPIO pins
• 10 PWM outputs
• 1 analog input (ADC)
• Serial interfaces: UART, I2C, SPI, 1-Wire
• USB Type-C connector for programming and communication
• USB-UART converter on the CH340 chip
• PCB antenna built into the module
• Przysick Reset
• Goldpin raster: 2.54 mm
• Module dimensions: 34 x 25 mm
• Weight: 10 g

Package:

1x ESP8266 WEMOS D1 MINI ESP-12F Z USB-C

• Compact Design: Shell-in-one structure for enhanced durability
• High Voltage Output: Capable of stepping up voltage to DC 200-400KV
• Efficient Current Handling: Input 4A and output 0.5A
• Polar Discharge Distance: Approximately 1.5 cm, beyond which damage may occur

• 16 Button Matrix: Includes keys 0-9, #, *, and A-D, providing a wide range of input options.
• Easy Communication: Simple and direct communication with any microcontroller, perfect for Arduino projects.
• Compact Design: Space-efficient design ideal for embedded projects and prototyping.
• Durable Keys: High-quality switches for responsive performance.

• Integrated Cold Junction Compensation: Ensures accurate temperature measurement with built-in cold junction compensation.
• High-Resolution Output: Provides 12-bit resolution, allowing temperature readings from 0°C to 1024°C with a 0.25°C resolution.
• Thermocouple Break Detection: The module includes a circuit to detect thermocouple breaks, ensuring reliable operation.
• K-Type Thermocouple: Compatible with a K-type thermocouple, ideal for high-temperature measurements.

• 1.5-inch RGB OLED display with 128x128 resolution
• 65K high-color (16-bit) depth for vibrant visuals
• Supports both 4-wire SPI and 3-wire SPI interfaces
• Wide viewing angle of over 160°

• High-quality ABS material ensures durability and long-lasting use.
• Designed to securely hold two 18650 batteries.
• Compact and lightweight design for easy integration into projects.
• Hard pin connections provide stable and reliable performance.