Relay – Hamtech Electronics Technologies https://hamtechtechnologies.com Sun, 21 Jun 2026 07:35:42 +0000 en-US hourly 1 https://wordpress.org/?v=7.0.3 https://hamtechtechnologies.com/wp-content/uploads/2025/11/h-100x100.webp Relay – Hamtech Electronics Technologies https://hamtechtechnologies.com 32 32 4-channel Relay 12v https://hamtechtechnologies.com/product/4-channel-relay/ https://hamtechtechnologies.com/product/4-channel-relay/#respond Thu, 20 Nov 2025 19:51:57 +0000 https://hamtechtechnologies.com/index.php/product/4-channel-relay/ 4-Channel 12V Relay Module allows you to control multiple high-voltage devices safely from a low-voltage microcontroller, with opto-isolated inputs for protection.]]> This 4-Channel 12V Relay Module is designed for controlling 4 separate high-voltage devices using a low-voltage microcontroller such as Arduino, ESP32, or Raspberry Pi. Each relay channel is opto-isolated, which protects your microcontroller from high-voltage spikes. The module supports both active HIGH and LOW triggering and includes onboard LEDs to indicate relay status. Ideal for home automation, IoT, and robotics projects, it provides safe and reliable control of AC or DC loads.

Key Features

  • 4-channel relay module, each channel rated for 10A at 250V AC / 10A at 30V DC

  • Opto-isolated input for microcontroller protection

  • Onboard LED indicators for relay status

  • Supports both active HIGH and LOW triggering

  • Operating voltage: 12V DC

  • Suitable for Arduino, ESP32, Raspberry Pi, and other microcontrollers

Variants

  • 4-Channel Standard Relay Module

  • 4-Channel with screw terminals for easy connection

Specifications

Feature Details
Channels 4
Relay Voltage 12V DC
Max Load 10A @ 250V AC / 10A @ 30V DC
Input Type Opto-Isolated
Trigger Active HIGH / LOW
LED Indicators Yes
Dimensions 85 × 55 × 18 mm

Applications

  • Home automation (lights, fans, appliances)

  • IoT projects requiring multiple relay controls

  • Robotics and industrial automation

  • Arduino, ESP32, Raspberry Pi-based control projects

  • High-voltage load switching with low-voltage controllers

Compatible Boards / Circuits

  • Arduino Uno, Mega, Nano

  • ESP32 / ESP8266

  • Raspberry Pi (via GPIO and relay driver)

  • Any microcontroller with digital output

]]> https://hamtechtechnologies.com/product/4-channel-relay/feed/ 0 1-channel Relay https://hamtechtechnologies.com/product/1-channel-relay/ https://hamtechtechnologies.com/product/1-channel-relay/#respond Thu, 20 Nov 2025 19:51:56 +0000 https://hamtechtechnologies.com/index.php/product/1-channel-relay/ The 1-Channel Relay Module is a compact, high-quality electromechanical switch designed for controlling high-voltage AC or DC devices using low-voltage logic signals. It can be triggered by microcontrollers such as Arduino, ESP8266, ESP32, STM32, Raspberry Pi, and other logic-level systems.
The relay provides electrical isolation between the control circuit and the high-voltage load, making it suitable for home automation, industrial control, and smart IoT applications.

Key Features

  • Supports both AC and DC loads

  • Optocoupler isolation for noise protection (on opto-isolated version)

  • Works with 3.3V and 5V logic

  • High-quality relay with long lifespan

  • Status indication LED

  • Screw terminals for secure wiring

  • Suitable for microcontroller-based automation

Variants

  • Standard Relay (No optocoupler)

  • Optocoupler Isolated Relay

  • 5V Relay Module

  • 3.3V Relay Module

Specifications

Feature Details
Relay Voltage 5V or 3.3V (depending on variant)
Trigger Voltage 3.3–5V
Contact Rating 10A @ 250VAC / 10A @ 30VDC
Control Signal Type Low-level or high-level trigger (depends on model)
Output NO, NC, COM
Isolation Optional optocoupler
Indicators Power LED & Relay status LED
Mounting PCB mount / Screw terminals

Applications

  • Smart home automation

  • Lighting control

  • Motor and pump switching

  • HVAC control

  • Industrial automation

  • IoT smart switches

  • Remote power control

  • Security systems

Compatible Boards

  • Arduino Uno / Mega / Nano

  • ESP8266, Wemos D1 Mini

  • ESP32 DevKit

  • Raspberry Pi (any model)

  • STM32 series

  • PIC / AVR / ARM boards

]]> https://hamtechtechnologies.com/product/1-channel-relay/feed/ 0 12v-2-channel Relay https://hamtechtechnologies.com/product/2-channel-relay/ https://hamtechtechnologies.com/product/2-channel-relay/#respond Thu, 20 Nov 2025 19:51:56 +0000 https://hamtechtechnologies.com/index.php/product/2-channel-relay/ The 12V 2-Channel Relay Module is designed for controlling high-voltage AC or DC devices using low-voltage logic signals from Arduino, ESP32, Raspberry Pi, or other microcontrollers. Each relay channel is isolated via an optocoupler to protect the control circuit. The module features onboard LEDs indicating relay activation and screw terminals for secure connections.

Key Features

  • 2 independent relay channels

  • Opto-isolated inputs for safe operation

  • Onboard LED indicators for relay status

  • Supports both AC and DC loads

  • Compatible with 5V or 12V logic (depending on module)

Variants

  • Standard 2-Channel Relay Module (12V relay)

  • 2-Channel Relay Module with 5V trigger input

Specifications

Feature Details
Number of Relays 2
Relay Voltage 12V DC
Max Switching Voltage 250V AC / 30V DC
Max Switching Current 10A
Isolation Opto-isolated inputs
Trigger Voltage 5V–12V DC
Dimensions ~70 × 45 × 20 mm

Applications

  • Home automation (lights, fans, appliances)

  • Industrial automation

  • IoT relay control projects

  • Robotics and motor switching

  • Remote-controlled AC/DC devices

Compatible Boards / Circuits

  • Arduino Uno, Mega, Nano

  • ESP32 / ESP8266

  • Raspberry Pi (via GPIO and opto-isolation)

]]> https://hamtechtechnologies.com/product/2-channel-relay/feed/ 0