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Reference: RBD-0351

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1-Channel Relay Module - 12V (High and Low Level Trigger) Robotics Bangladesh
  • 1-Channel Relay Module - 12V (High and Low Level Trigger) Robotics Bangladesh

1-Channel Relay Module - 12V (High and Low Level Trigger)

RBD-3445

The 1-Channel Relay Module - 12V is a highly versatile switching solution designed to allow low-voltage control of high-voltage, high-current loads. Ideal for microcontroller and automation projects, this module can control electrical appliances, lighting, motors, and more with ease. Featuring a 12V DC operation and a high/low trigger selection via jumper, it provides maximum compatibility with a wide range of control devices.

BDT 135
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The 1-Channel Relay Module - 12V is a highly versatile switching solution designed to allow low-voltage control of high-voltage, high-current loads. Ideal for microcontroller and automation projects, this module can control electrical appliances, lighting, motors, and more with ease. Featuring a 12V DC operation and a high/low trigger selection via jumper, it provides maximum compatibility with a wide range of control devices.

Equipped with an easy-to-use screw terminal block, a status LED indicator, and a built-in freewheeling diode for protection, this relay module ensures safe and reliable operation in any environment. Whether used in robotics, smart home systems, or industrial automation, this module delivers stable, flexible performance.

Key Features:

  • Selectable Trigger Level: Switch between HIGH or LOW trigger modes using a jumper, compatible with both 3.3V and 5V logic systems.

  • 12V Operation: Designed to work with a 12V DC power supply for energizing the relay.

  • High Load Capacity: Supports loads up to 10A at 250VAC or 30VDC.

  • Terminal Block: Convenient screw terminals for secure external circuit connections.

  • LED Status Indicator: Clearly shows when the relay is activated.

  • Built-in Protection: Integrated freewheeling diode to suppress voltage spikes when switching inductive loads.

  • Mounting Holes: Easy installation onto enclosures or panels.

Technical Specifications:

  • Type: Relay Module

  • Number of Channels: 1 Channel

  • Operating Voltage: 12V DC

  • Working Current: 190mA

  • Trigger Current: 3mA ~ 5mA

  • Trigger Levels: Selectable (High or Low)

  • Low-Level Trigger Voltage: 0V ~ 1.5V

  • High-Level Trigger Voltage: 3V ~ 5V

  • Load Capacity: 10A at 250VAC or 30VDC

  • Terminal Block: Screw Terminal Block

  • LED Indicator: Relay Status Indicator

  • Mounting: Pre-drilled mounting holes

  • Dimensions: 50mm x 26mm x 18.5mm

How to Use:

  1. Connect DC+ (12V) and DC- (GND) to the power supply.

  2. Connect the IN pin to your microcontroller or trigger device.

  3. Select trigger mode (HIGH/LOW) via the onboard jumper based on your system's logic level.

  4. Connect your load to the relay's NO (Normally Open) or NC (Normally Closed) contacts depending on your needs.

  5. Use caution when connecting high-voltage loads and ensure proper isolation.

Applications:

  • Smart home automation

  • Motor control systems

  • Remote light switching

  • Industrial automation projects

  • Robotics and IoT applications

  • Safety and alarm systems

Package Includes:

  • 1 x 1-Channel Relay Module - 12V (High and Low Level Trigger)

Usage tips of 1-Channel Relay Module - 12V (High and Low Level Trigger)

  • Check Ratings: Ensure that the voltage and current ratings of the relay module match the requirements of your load.
  • Use External Power Supply: Use a 12v external power supply to energize the relay module.
  • Connect the ground pins of the relay power supply (12V) and the microcontroller board.
  • Understand NO and NC Configurations: Understand whether the relay's contacts are normally open (NO) or normally closed (NC) and wire accordingly based on your project requirements.
  • Check Input Signal Voltage: Verify the voltage required to activate the relay and ensure compatibility with the control device (3.3/5v are functional).
  • Check Polarity: observe polarity of the input to avoid damage during connections.
  • If the allowed voltage or current is exceeded, depending on the amount of the exceedance, the relay contacts will be damaged due to the occurrence of arc and will lose their function over time. Look at the image below.
  • Exercise caution when working with high-voltage circuits, and ensure proper isolation and protection to prevent electrical hazards. Double-check the wiring and connections before applying power to the relay module.
  • Install freewheeling diode to protect against back electromotive force when switching inductive loads.

contacts corrosion.jpg

Pinout of 1-Channel Relay Module - 12V (High and Low Level Trigger)

Inputs:

  • DC+: Positive power supply (12V)
  • DC-: Connect power and œIn signal negative
  • IN: Relay module signal to trigger the end, you can set a high or low level control relay

Relay outputs:

  • NO: Normally open relay interface
  • COM: Common Interface Relays
  • NC: Normally closed relay interface

1 channel relay module Pinout

What is the price of 1-Channel Relay Module - 12V (High and Low Level Trigger) in Bangladesh?

The latest price of 1-Channel Relay Module - 12V (High and Low Level Trigger) in Bangladesh is BDT 135 You can buy the 1-Channel Relay Module - 12V (High and Low Level Trigger) at best price from our RoboticsBD or visit RoboticsBD Office.

Please note that the product information provided on our website may not be entirely accurate as it is collected from various sources on the web. While we strive to provide the most up-to-date information possible, we cannot guarantee its accuracy. We recommend that you always read the product labels, warnings, and directions before using any product.

Product Images are shown for illustrative purposes only and may differ from the actual product.

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