5V Relay Modules Pinout Diagrams (Single, Dual, Multi-Channel)
Hi, in this article, we are going to see all types of 5V Relay Modules Pinout Diagrams e.g. Single Channel, Dual Channel, 4 Channel, or Multi-Channel.
A relay module is basically an electronic component used to control high-power devices (like motors, lights, or appliances) using a low-power signal from a microcontroller or other control circuits. It acts as a switch that can be operated electrically. It is built with Relay and some electronic components.
There are two types of relay modules are there - single-channel and multi-channel. Dual-channel, 3-channel, 4-channel, 5-channel, 6-channel, 8-channel, and more numbers of channels are coming under multi-channel.
The main components of a Relay module are Relay, Input Control Pins, Output Terminals, etc.
Relay is the core of the module. It is an electrically operated switch. It has a magnetic coil. When the coil is energized it magnetically pulls or pushes a switch inside the relay to connect or disconnect a circuit.
The Input Control Pins(e.g., IN1, IN2, etc.) receive signals from a microcontroller (e.g., Arduino, Raspberry Pi) or another control device. These signals are typically low voltage (e.g., 3.3V or 5V).
The output terminals connect to the high-power circuit (e.g., 230V AC mains). They are usually labeled as Normally Open (NO), Normally Closed (NC), and Common (COM).
5V Single Channel Relay Module Pinout Diagram
Here, you can see the pinout diagram of a 5V Single Channel Relay Module.
A 5V single-channel relay module typically has the following pins,
Input Pins (for control)
IN (Input): This pin is used to receive the control signal from the microcontroller or control circuit. It activates the relay when a logic HIGH (5V) or LOW (depending on the relay type) is applied.
VCC: This pin provides power to the relay's control circuit. It needs to be connected to a 5V supply.
GND: This pin is used for the Ground connection for the relay module and the microcontroller or control circuit.
Output Pins (for the relay switch)
COM (Common): This pin is the common connection point for the relay. It is typically connected to one terminal of the device you want to control.
NO (Normally Open): When the relay is inactive, this pin is disconnected from COM. When the relay is activated, it connects to COM, allowing current to flow to your device.
NC (Normally Closed): When the relay is inactive, this pin is connected to COM. When the relay is activated, it disconnects from COM, cutting off the current to your device.
5V Dual Channel Relay Module Pinout Diagram
Here, you can see the pinout diagram of a 5V Dual Channel Relay Module.
The 5V dual-channel relay module has two relays and can control two separate devices. Its pinout is similar to a single-channel relay but with an extra set of pins for the second relay.
Control Pins (Low Voltage Side)
VCC: Power supply pin (5V) for the relay module's control circuit. Connect this to the 5V pin of the microcontroller.
GND: Ground pin for the relay module, which connects to the ground of the microcontroller.
IN1: Control signal pin for the first relay. When this pin receives a HIGH or LOW signal (depending on the relay type), it activates Relay 1.
IN2: Control signal pin for the second relay. When this pin receives a HIGH or LOW signal, it activates Relay 2.
External Power Pins for the Relay
JD-VCC: The module has a JD-VCC pin, you can supply a separate 5V power source for the relay coils. If you use this pin, remove the jumper between VCC and JD-VCC to isolate the relay power from the control circuit.
GND: Ground for the relay coil side.
Output Pins (High Voltage Side)
The output terminals of a dual-channel relay are the same as the single-channel relay just the difference is for a single-channel relay, we get one set of output terminals ( NO, NC, and Common) as there is only one relay available but in a dual channel, we will get two sets of output terminals(one for each relay).
5V 4-Channel Relay Module Pinout Diagram
Here, you can see the pinout diagram of a 5V 4-Channel Relay Module.
As you can see in the above pinout diagram, the 4-Channel Relay Module is built with 4 Relays, so the pinout is almost same for the both types of relay modules. Only the difference is the number of input and output terminals corresponding to the number of relays. Both modules function similarly but have a different number of channels for controlling devices.
For a Dual-Channel Relay Module, 2 input pins (IN1, IN2) for control and 2 sets of output terminals (COM1, NO1, NC1 and COM2, NO2, NC2) to control 2 devices. On the other hand, for a 4-Channel Relay Module, 4 input pins (IN1, IN2, IN3, IN4) for control and 4 sets of output terminals (COM1, NO1, NC1, COM2, NO2, NC2, COM3, NO3, NC3, and COM4, NO4, NC4) to control 4 devices.
As you can see the difference between a dual-channel relay module and a 4-channel relay module, there are similar differences between all types of multi-channel relays e.g. 6-channel, 8-channel, 10-channel, 12-channel, 16-channel, and more.
For large relay modules, as the number of relays increases, the module will consume more power. Each relay typically requires around 70-100 mA when activated. For larger relay modules (e.g., 8-channel or 16-channel), the total current requirement can exceed what a microcontroller can supply, so an external power source is required. In these cases, the JD VCC pin provides a very important role.
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5V Relay Modules Pinout Diagrams (Single, Dual, Multi-Channel)
Reviewed by Author
on
September 21, 2024
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Reviewed by Author
on
September 21, 2024
Rating: