• 1 channel relay interface board
• Uses NE555 chip for timer control
• Adjustable delay time from 0 to 10 seconds
• Control voltage: AC 0~250V/max. 10A, DC 0-30V/max. 10A

IR Transmitter Module:

• Supply Voltage: 5V
• Wavelength: 940nm

IR Receiver Module:

• High Sensitivity 1838 remote control receiver
• Working Voltage: 5V

• PWM pulse-width modulation output for accurate readings
• Detects particles as small as 1 µm
• High and low voltage outputs for clean air and particles
• Compact and lightweight design

• High-quality SIM808 module for GSM, GPRS, GPS, and Bluetooth communication
• Supports quad-band 850/900/1800/1900MHz for global compatibility
• Integrated GPS with A-GPS support for enhanced positioning
• AT command control for SMS, phone calls, GPRS, and GPS data

• Dual H-Bridge Motor Driver: Capable of driving two DC motors or a 4-wire two-phase stepper motor.
• Built-in TSD: Protects the motor from stalling, ensuring smooth operation.
• Ultra-Small Size: Ideal for assembly and use in compact projects like smart cars or robots.

• Built-in WS2812 IC for easy control
• Supports full-color RGB lighting
• Operates at 4V - 5.5V DC
• Compact and lightweight design

• High-precision TDS measurement for water quality testing.
• Compatible with Arduino and other microcontrollers for easy integration.
• Low power consumption with a working current of just 3-6mA.
• Wide measurement range from 0 to 1000ppm.

• Triple output: 3.3V, 5.0V, and 12V
• 3.3V and 5V outputs with +/-0.05V tolerance
• 800mA max load current for 5V output
• Easy to use with multiple input and output pins

• Onboard AMS1117-3.3 chip for stable 3.3V output
• DC input voltage range: 4.75V to 12V
• Self-locking switch: Easily turn power on/off during testing
• Power indicator light: Indicates whether the power is on

• Double-Sided Design: Maximizes space for component placement and routing.
• High-Quality Material: Made from Grade A material for durability.
• Ideal for Prototyping: Perfect for DIY electronics projects and testing.
• Pre-Printed Dot Pattern: Simplifies the assembly process for easy soldering.

• Compact Display: 1.8-inch size for portable projects
• High Resolution: 128x160 pixels for clear images
• Wide Viewing Angle: Improved visibility from various angles
• Controller: ST7735, widely used for high-quality displays

• 2-channel relay module for controlling AC and DC loads
• Low-level trigger for easy microcontroller interfacing
• Compatible with Arduino, Raspberry Pi, ESP8266, ESP32, and other microcontrollers
• Capable of switching high-power loads up to 250V AC @ 10A or 30V DC @ 10A

• Dual Output Voltages: 5.0V and 3.3V
• Input: Can be powered via DC wall wart or USB port
• Voltage Selection: 2-pin shunt jumper for output voltage selection
• Independent Control: Each rail can be

Specification:

• Light source： COB
• Color: Warm white
• CIR: >80
• Power: 20W
• Input Voltage: AC 220V-265V
• Housing Material: Aluminum
• Source Life: > 50,000 hours
• Lighting angle: 120

Package:

1x COB LED Chip Lamp 20W 220V Intelligent IC No Driver Needed LED Bulb for Flood Light Spotlight DIY Lighting 20W Warm White

• Wide Input Voltage Range: Supports input from 5V to 32V for versatile usage.
• Wide Output Voltage Range: Adjustable output from 1.25V to 35V.
• High Conversion Efficiency: With a built-in 4A MOSFET, it achieves up to 94% efficiency.
• High Switching Frequency: Operates at 400KHz for reduced ripple.

• L9110S-chip motor driver
• Supports driving two DC motors or a 4-wire 2-phase stepper motor
• Ultra-small PCB size for easy integration
• Fixed mounting holes with a 3mm diameter for secure installation