JOY it COM-RM01 Relay Module Owner's Manual

Connection	Description
NO	Contact that is open in the idle state. Closes when relay is activated.
COM	Common contact, connected to either NO or NC based on control signal.
NC	Contact that is closed in the idle state. Opens when relay is activated.
S	Control signal (3 – 5 V DC logic level)

3. Code Example for Arduino:

To use with Arduino, connect as follows:

Relay + to Arduino 5V

S to Arduino pin D7

Upload the provided code example to Arduino for relay
operation.

4. Code Example for Raspberry Pi:

To use with Raspberry Pi, connect as follows:

Relay + to Raspberry Pi 5V

S to Raspberry Pi GPIO 17

Ensure required software is installed on Raspberry Pi for module
operation.

Frequently Asked Questions (FAQ):

Q: What should I do if the relay module overheats during
operation?

A: Ensure adequate ventilation around the relay module to
prevent overheating. If the issue persists, contact customer
support.

Q: Can I use the relay module with high-voltage devices?

A: It is recommended to use appropriate protective circuits for
high-voltage devices to ensure safe operation and protect the relay
module.

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RELAY MODULE
COM-RM01
Joy-IT powered by SIMAC Electronics GmbH – Pascalstr. 8 – 47506 Neukirchen-Vluyn – www.joy-it.net

1. GENERAL INFORMATION Dear customer, thank you for choosing our product. In the following, we will show you what you need to bear in mind when commissioning and using the product.
If unexpected problems occur during use, please do not hesitate to contact us.
2. SAFETY INSTRUCTIONS Never work on the relay module while it is energized and have installation and maintenance carried out by qualified personnel only.
Ensure sufficient insulation distances and avoid short circuits due to loose cables or insufficient distances.
Install the relay module in a dry, clean environment.
Always switch off the power supply before connecting, configuring or maintaining the module.
Use fuses or overvoltage protection devices to protect the relay and the connected devices.
Mount the relay module securely on an insulated and non-conductive surface and avoid contact with conductive materials.
Use cables with a suitable cross-section for the load side and tighten the terminals firmly to prevent loose contact.
For inductive loads (e.g. motors or coils), flyback diodes, varistors or similar protective circuits should be used to intercept overvoltages.
Ensure adequate ventilation to prevent the relay module from overheating.
Avoid using the device in environments with strong vibrations or mechanical shocks, as this may impair its function.

3. OVERVIEW OF THE CIRCUIT BOARD

–

COM

S NC

Connection NO COM NC S

Description
Contact that is open in the idle state. Closes when the relay is activated by a high level on the control signal pin.
Common contact, which is connected to either NO or NC depending on the control signal.
Contact that is closed in the idle state. Opens when the relay is activated by a high level on the control signal pin.
Control signal (3 – 5 V DC logic level)

Positive connection of the power supply for the control side

(5 V DC)

–

Negative connection of the power supply for the control side

(GND)

i If the relay is subjected to a high load for a prolonged period, ensure that the
relay module is sufficiently ventilated to prevent overheating and to ensure
the service life of the relay.

4. CODE EXAMPLE ARDUINO

To use the module with your Arduino, connect it to your Arduino as shown in the diagram and table.

Relay + S

Arduino 5 V GND D7

Now copy the following code example and upload it to your Arduino. In the example, the relay is switched every 5 seconds.
// Pin to which the relay is connected const int relayPin = 7;
void setup() { // Set relay pin as output pinMode(relayPin, OUTPUT);
// Switch off relay initially digitalWrite(relayPin, LOW); }
void loop() { // Switch on relay digitalWrite(relayPin, HIGH); delay(5000); // wait 5 seconds
// Switch off relay digitalWrite(relayPin, LOW); delay(5000); // wait 5 seconds }

5. CODE EXAMPLE RASPBERRY PI

To use the module with your Raspberry Pi, connect it to your Raspberry Pi as shown in the diagram and table.

Relay + S

Raspberry Pi 5 V GND
GPIO 17

Now enter the following commands in the terminal to ensure that the required software is installed.
sudo apt update sudo apt upgrade sudo apt install python3-pip pip3 install gpiozero

Now enter the following command in the terminal to create a new Python file.
nano COM-RM01.py Copy the following code example there
from gpiozero import OutputDevice from time import sleep
# Pin to which the relay is connected (e.g. GPIO17) relay = OutputDevice(17)
while True: # Switch on relay relay.on()
print(“Relay switched on”) sleep(5) # wait 5 seconds
# Switch off relay relay.off() print(“Relay switched off”) sleep(5) # wait 5 seconds
Save the file with CTRL + O and Enter. And exit the file with CTRL + X.
You can now execute the sample code with the following command:
python3 COM-RM01.py
In the example, the relay is switched every 5 seconds.
You can close the program again with the key combination CTRL+C.

6. INFORMATION AND TAKE-BACK OBLIGATIONS
Our information and take-back obligations under the German Electrical and Electronic Equipment Act (ElektroG)
Symbol on electrical and electronic devices: This crossed-out garbage can means that electrical and electronic appliances do not belong in household waste. You must dispose of old appliances at a collection point. Before handing them in, you must separate used batteries and accumulators that are not enclosed in the old appliance.
Return options: As an end user, you can hand in your old appliance (which essentially fulfills the same function as the new appliance purchased from us) for disposal free of charge when you purchase a new appliance. Small appliances with external dimensions of no more than 25 cm can be disposed of in normal household quantities irrespective of the purchase of a new appliance.
Returns can be made at our company location during opening hours: SIMAC Electronics GmbH, Pascalstr. 8, D-47506 Neukirchen-Vluyn
Return option in your region: We will send you a parcel stamp with which you can return the device to us free of charge. Please contact us by e-mail at Service@joy-it.net or by telephone.
Packaging information: Please pack your old appliance securely for transportation. If you do not have suitable packaging material or do not wish to use your own, please contact us and we will send you suitable packaging.

7. SUPPORT
We are also there for you after your purchase. If you still have questions or problems, we are also available by e-mail, telephone and ticket support system.
E-mail: service@joy-it.net Ticket system: https://support.joy-it.net Phone: +49 (0)2845 9360 – 50
For more information, please visit our website: www.joy-it.net

Published: 2025.01.16

www.joy-it.net SIMAC Elektronik GmbH Pascalstr. 8 47506 Neukirchen-Vluyn

Documents / Resources

JOY it COM-RM01 Relay Module [pdf] Owner's Manual
COM-RM01, COM-RM01 Relay Module, COM-RM01, Relay Module, Module

References

User Manual

JOY it COM-RM01 Relay Module Owner’s Manual

COM-RM01 Relay Module

Specifications:

Product Usage Instructions:

1. Safety Instructions:

2. Overview of the Circuit Board: