ElecFreaks
2 Channel 5V Relay Module BK_RL2_01
The 2-Channel 5V Relay Module allows you to control two high-power devices independently using 5V TTL signals from a microcontroller such as Arduino, PIC, AR...
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The 2-Channel 5V Relay Module allows you to control two high-power devices independently using 5V TTL signals from a microcontroller such as Arduino, PIC, ARM, or MSP430. Each channel features a relay with screw terminals and an LED indicator showing the relay state.
The compact modular design makes it easy to integrate into breadboard or project enclosure setups for home automation, motor control, and other switching applications.
Key Features
- 2 Independent Channels – Control two devices separately
- 5V Relay Coils – Powered directly from 5V microcontroller supply
- TTL Compatible – 5V/12V/24V TTL-level control signals
- Status LEDs – Visual indication of each relay state
- Screw Terminals – Secure connections for high-power loads
Specifications
- Drive Current: 20mA
- Control Signal: 5V/12V/24V TTL level
- Max Switching Voltage: 250V AC / 30V DC
- Dimensions: 35 × 50 × 15mm
Ideal For
- Home automation and smart switching
- Motor and pump control
- Lighting control systems
- Arduino and microcontroller relay projects
Package Contents
- 1× 2-Channel 5V Relay Module
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- Relay module
- A relay module uses an electrically controlled switch to let a low-power microcontroller control a separate circuit. It matters when switching devices that need different voltages or more current than a microcontroller pin can safely handle.
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Sensors & Input
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