Relay 12V

Original price was: ₹25.00.Current price is: ₹23.75.

A 12V relay controls high-power devices using a low-power signal. It features contacts that switch between open and closed positions, handling currents from a few to over 30 amps. Used in automotive, home automation, and industrial applications, it provides electrical isolation and reliable operation, ensuring versatile and safe control.

Relay Module 4 Channel

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Sold By : Computronics Lab - Electronic and Robotic Components SKU: relay-12v Category:


Relay 12V

A 12V relay is an essential component in electronic and electrical systems, widely used for its ability to control high-power devices with a low-power signal. Here’s a detailed overview of a 12V relay covering its features, types, applications, and advantages:


  1. Voltage Rating
    • Operates at 12V DC, making it suitable for automotive and various electronic applications.
    • Ensures compatibility with standard 12V power supplies and batteries.
  2. Contacts and Switching
    • Equipped with one or more sets of contacts that can switch between open (NO) and closed (NC) positions.
    • Capable of handling high current loads, typically ranging from a few amps to over 30 amps depending on the relay type.
  3. Coil
    • The relay coil, when energized with 12V, creates a magnetic field that moves the contacts.
    • Designed to have low power consumption while providing reliable switching action.
  4. Isolation
    • Provides electrical isolation between the control circuit (low power) and the load circuit (high power).
    • Enhances safety and protects sensitive control electronics from high-voltage spikes.


  1. SPDT (Single Pole Double Throw)
    • Has one common terminal that connects to either of two other terminals.
    • Versatile for switching applications, allowing one input to control two different outputs.
  2. DPDT (Double Pole Double Throw)
    • Contains two independent SPDT switches operated by a single coil.
    • Useful for more complex switching applications requiring dual control.
  3. SPST (Single Pole Single Throw)
    • Simplest type with one input and one output, acting as an on/off switch.
    • Commonly used in basic control applications.
  4. Latching Relay
    • Maintains its position even after the control power is removed, requiring a pulse to change state.
    • Ideal for applications needing minimal power consumption.


  1. Automotive
    • Used to control headlights, horns, fuel pumps, and other electrical components.
    • Ensures reliable operation and protection of vehicle electronics.
  2. Home Automation
    • Integral to smart home systems for controlling lights, fans, and appliances.
    • Provides remote control capability and integration with home automation controllers.
  3. Industrial Control
    • Employed in machinery and process control systems for switching motors, heaters, and other high-power devices.
    • Enhances operational safety and automation efficiency.
  4. Electronic Projects
    • Popular in DIY and hobbyist projects for controlling various loads with microcontrollers like Arduino and Raspberry Pi.
    • Simplifies the interface between low-power control circuits and high-power devices.


  1. High Power Handling
    • Capable of switching high current loads, making it suitable for demanding applications.
    • Ensures reliable operation of high-power devices.
  2. Electrical Isolation
    • Provides isolation between control and load circuits, enhancing safety and protecting sensitive electronics.
    • Prevents interference and damage from voltage spikes.
  3. Versatility
    • Available in various configurations to suit different application requirements.
    • Supports a wide range of switching functions and control scenarios.
  4. Cost-Effective
    • Offers a reliable and economical solution for controlling high-power devices.
    • Reduces the need for complex circuitry and enhances system simplicity.


A 12V relay is a versatile and indispensable component in many electronic and electrical systems. Its ability to control high-power devices with a low-power signal, combined with features like electrical isolation and high current handling, makes it suitable for automotive, home automation, industrial control, and numerous other applications.

Relay Module 2 Channel

Additional information

Weight0.00 kg
Dimensions0.00 × 0.00 × 0.00 cm


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