4 Channel 5V Relay Module

Control multiple high-voltage devices safely and efficiently with the 4 Channel 5V Relay Module. This module features four independent relays that can be directly controlled by popular microcontrollers such as Arduino, ESP32, Raspberry Pi, NodeMCU, and other 5V logic development boards. It is ideal for home automation, industrial control systems, robotics, IoT projects, and remote switching applications.

The module allows low-voltage control of AC and DC appliances such as lights, fans, motors, pumps, and other electrical equipment. Built-in status LEDs provide visual indication of relay operation, while transistor-driven inputs ensure reliable switching performance.

Features

• 4 independent relay channels
• Operates on 5V DC supply
• Compatible with Arduino, ESP32, Raspberry Pi, NodeMCU, and more
• Can control both AC and DC loads
• LED indicators for power and relay status
• High-current relay contacts for switching larger loads
• Easy screw terminal connections
• Suitable for automation and IoT projects

Specifications

• Operating Voltage: 5V DC
• Number of Channels: 4
• Relay Type: SPDT (Single Pole Double Throw)
• Trigger Signal: TTL Logic Level
• Contact Rating: 10A 250V AC / 10A 30V DC
• Interface: Digital Input Control
• Mounting Holes: Available for easy installation

Applications

• Home Automation Systems
• Smart Appliance Control
• Industrial Automation
• Robotics Projects
• IoT-Based Switching Systems
• Security and Access Control Systems
• Remote Power Management

Package Includes:

• 1 × 4 Channel 5V Relay Module

200 RPM 12V DC Geared Motor

Product Description

The 200 RPM 12V DC Geared Motor is a compact, high-torque motor designed for robotics, automation projects, DIY electronics, and educational applications. Equipped with a durable metal gearbox, it delivers a steady output speed of approximately 200 RPM while providing excellent torque for driving wheels, mechanisms, and small robotic systems.

Its robust construction and low power consumption make it an ideal choice for hobbyists, students, and engineers working on mobile robots, smart vehicles, conveyor systems, and other motion-control projects.

Features

• Operating Voltage: 12V DC
• Speed: 200 RPM (Approx.)
• High torque output with metal gearbox
• Compact and lightweight design
• Durable construction for long service life
• Low noise and smooth operation
• Easy to mount and integrate into projects
• Suitable for continuous operation

Applications

• Robotics Projects
• Line Follower Robots
• Obstacle Avoiding Robots
• Smart Cars & RC Vehicles
• DIY Automation Systems
• Educational Electronics Projects
• Small Conveyor Mechanisms
• Motorized Prototypes

Specifications

Package Includes

• 1 × 200 RPM 12V DC Geared Motor

12-40V 10A DC PWM Motor Speed Controller – Product Description

12-40V 10A DC PWM Speed Controller is a compact and efficient motor speed regulation module designed for controlling the speed of DC motors using Pulse Width Modulation (PWM) technology. It provides smooth and precise speed adjustment while maintaining high torque and minimizing power loss. Ideal for robotics, DIY electronics projects, automation systems, fans, pumps, and various DC motor applications.

Key Features:

• Wide operating voltage range: 12V to 40V DC
• Maximum output current: 10A
• PWM speed control for smooth and efficient motor operation
• Adjustable speed from 0% to 100%
• High conversion efficiency with low heat generation
• Simple rotary potentiometer for easy speed adjustment
• Compact design for easy installation
• Suitable for brushed DC motors, fans, pumps, and other DC loads

Specifications:

• Input Voltage: DC 12V – 40V
• Maximum Current: 10A
• Control Method: PWM (Pulse Width Modulation)
• Speed Adjustment Range: 0% – 100%
• Continuous Output Power: Up to 400W (depending on voltage and cooling conditions)
• Control Type: Rotary Knob Potentiometer
• Application: DC motor speed control, fan speed control, pump regulation, DIY projects

Applications:

• DC motor speed control
• Robotics and automation projects
• Cooling fan regulation
• Water pump speed adjustment
• DIY electronics and hobby projects
• Industrial control systems

Package Includes:

• 1 × 12-40V 10A DC PWM Motor Speed Controller Module

200 RPM 12V Johnson Geared Motor – High Torque DC Motor

The 200 RPM 12V Johnson Geared Motor is a powerful and reliable DC motor designed for robotics, automation, DIY projects, and industrial applications. Equipped with a durable all-metal gearbox, this motor delivers high torque while maintaining a stable speed of 200 RPM, making it ideal for robotic vehicles, conveyor systems, smart machines, and actuator-based projects. Its robust construction ensures long operational life, smooth performance, and excellent load-handling capability.

Key Features

• Operating Voltage: 12V DC
• Speed: 200 RPM
• High Torque Output for heavy-duty applications
• Durable Metal Gearbox for extended lifespan
• 6mm D-Type/Side Shaft for secure wheel and coupling attachment
• Reversible Rotation (Clockwise & Anti-Clockwise)
• Easy Mounting with M3 mounting holes
• Suitable for Arduino, Raspberry Pi, and other microcontroller projects
• Low maintenance and reliable performance

Specifications

• Rated Voltage: 12V DC
• Operating Voltage Range: 6V – 18V
• No-Load Speed: 200 RPM
• Gear Material: Metal Spur Gears
• Shaft Diameter: 6mm
• Torque: Up to 6–8 kg-cm (varies by model and grade)
• Motor Type: Brushed DC Geared Motor
• Mounting: M3 threaded holes
• Rotation: Bidirectional (CW/CCW)

Applications

• Robotics and robotic cars
• Line follower and obstacle avoidance robots
• Conveyor belt systems
• Automatic doors and smart mechanisms
• DIY electronics projects
• Industrial automation prototypes
• Educational and STEM projects
• Motorized display systems

Package Includes

• 1 × 200 RPM 12V Johnson Geared Motor

8 Channel 5V Relay Module 

The 8 Channel 5V Relay Module is a versatile switching board designed to control high-voltage AC and DC devices using low-voltage microcontrollers such as Arduino, ESP32, ESP8266, Raspberry Pi, STM32, PIC, and AVR. Featuring eight independent relay channels with optocoupler isolation, this module provides safe and reliable control of appliances, motors, lights, pumps, solenoids, and home automation systems. Each relay can switch loads up to 10A, making it suitable for both DIY and industrial automation projects.

Key Features

• 8 independent relay channels for simultaneous control of multiple devices
• 5V operating voltage with TTL-compatible control signals
• Optocoupler isolation for enhanced protection and noise immunity
• Supports both 3.3V and 5V microcontroller logic levels
• High-power switching capability up to 10A per channel
• Individual LED indicators for relay status monitoring
• SPDT relay contacts (NO, NC, COM) for flexible wiring options
• Active LOW trigger design for easy interfacing
• Screw terminal connectors for secure load connections
• Compatible with Arduino, Raspberry Pi, ESP32, ESP8266, STM32, PLCs, and other controllers

Technical Specifications

• Operating Voltage: 5V DC
• Number of Channels: 8
• Trigger Voltage: 3.3V–5V Logic
• Contact Rating: 10A @ 250V AC / 10A @ 30V DC
• Relay Type: SPDT (Single Pole Double Throw)
• Isolation: Optocoupler Protected
• Indicator LEDs: 8 Status LEDs
• Input Pins: IN1–IN8, VCC, GND
• Output Contacts: NO, NC, COM per relay
• Mounting Holes: Available for easy installation

Applications

• Home Automation Systems
• Smart Lighting Control
• Industrial Automation
• Motor and Pump Control
• Security and Access Systems
• IoT Projects
• Remote Power Switching
• PLC-Based Automation
• Appliance Control and Load Management

Package Includes

• 1 × 8 Channel 5V Relay Module