• Quad-band compatibility: Works on GSM networks worldwide (850 / 900 / 1800 / 1900 MHz).
• Allows communication via SMS, MMS, GPRS, and audio through UART with AT commands.
• Includes 12 GPIOs, 2 PWMs, and an ADC from the SIM900 module.
• Compatible with Arduino and Arduino clones.

• 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

• Operating Voltage: 3.3V to 5V DC
• Operating Current: 15mA
• LED Indicators: Output and power status LEDs
• Based on LM393: Easy to integrate with microcontrollers

• Measures water turbidity for water quality monitoring.
• Provides both analog output (0-4.5V) and digital output (high/low level signal).
• Adjustable digital output threshold via potentiometer.
• Wide operating temperature range of 5℃~90℃.

• Rich Color Display: 65K color support for vibrant and detailed visuals.
• High Resolution: 128x160 resolution for a clear display.
• Easy Interface: Uses SPI serial bus for quick and efficient communication with the Arduino.
• SD Card Slot: Convenient for function expansion via SD card storage.

✔ Supports 1MB/S Operating Rate – Ideal for high-speed communication
✔ ISO-11898 Standard Compliant – Meets the physical layer requirements for CAN
✔ Compatible with 12V and 24V Systems – Versatile for different voltage systems
✔ Slope External Control – Reduces RFI (Radio Frequency Interference)

• 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.

• Operating voltage: 3.5-5V DC
• Current rating: 20mA
• Speaker power: 8ohm/3W
• Supported sampling rate (kHz): 8/11.025/12/16/22.05/24/32/44.1/48

• Easy Interface: Simple integration with the WeMos D1 mini for SD card operations.
• SPI Communication: Uses the SPI interface for communication between the WeMos D1 mini and the SD card.
• Compact Design: Designed specifically for the WeMos D1 mini, making it small and efficient for space-constrained projects.
• Wide Compatibility: Compatible with various microSD cards for data storage and retrieval.

Enhance your electronic projects with our High-Quality RS232 to TTL Converter Module. This versatile converter is perfect for a range of applications, ensuring reliable and efficient performance.

• Widely used in radio modifications, phone flashing, XBOX360 flashing, GPS, vehicle detection, and more
• Compact size
• Operates up to 250 kbit/s
• Low supply current: 300 µA (typical)
• External power supply required

Enhance your robotics and electronics projects with the IR Module QTR-8A Reflectance Sensor Array. This sensor array features 8 infrared detectors, making it perfect for applications in robotics, smart cars, laboratories, and DIY projects.

• Operating Voltage: 5V
• 8-Channel Infrared Detector
• Applications: Robot, Smart Car, Laboratory, DIY

Package Includes: 1 x IR Module QTR-8A Reflectance Sensor Array

• Utilizes a 24-bit high precision HX711 A/D converter chip
• Includes an integrated 128 times programmable gain amplifier
• Supports two analog input channels
• Ideal for pressure and weighing sensor applications

Specifications:

• Working Voltage: DC 4V - 60V
• Trigger Signal Source:
  • High-Level Trigger: DC 3.0V-24V
  • Low-Level Trigger: DC 0.0V-0.6V
• Output Power:
  • Voltage: DC 4V-60V
  • Current: 10A at room temperature, up to 15A with additional heat dissipation
  • Power: 600W
• Signal Frequency Support: 0-2.5KHz
• Operating Temperature: -40°C to 85°C
• Size: 4.6 x 2.9 x 1.5 cm

Package:

1x High Power 600W MOS Tube FET Trigger Drive Module PWM Control High/Low Level Trigger Switch DC 4V-60V 5V 12V 24V

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

• 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.

The Mini 5A PWM DC Motor Speed Controller is an essential module for precise speed control of DC motors and LED dimming. With an operating voltage range of 3V to 35V and a maximum power control of 90W, this compact controller ensures efficient performance in a variety of applications.

• Operating Voltage: DC3V-35V
• Control Power: 90W (maximum)
• Quiescent Current: 0.015A (standby)
• PWM Duty Cycle: 1% -100%
• PWM Frequency: 10kHz
• Size: 24 x 30mm (0.94 x 1.18 inches)