Arduino 4 Channel Relay Module 4 Way Control Board with Optocoupler – Dhaka Robotics
Dhaka Robotics presents the Arduino 4 Channel Relay Module 4 Way Control Board with Optocoupler, an essential component for your automation projects. This module is designed to control up to 4 high-voltage devices such as pumps, fans, and actuators. It features a built-in optocoupler that provides electrical isolation between the low-voltage control signal and the high-voltage load.
The Arduino 4 Channel Relay Module 4 Way Control Board with Optocoupler
is a must-have for anyone who wants to automate their high-voltage devices. This module is designed to control up to 4 high-voltage devices such as pumps, fans, and actuators. It features a built-in optocoupler that provides electrical isolation between the low-voltage control signal and the high-voltage load.
This module is easy to install and use. It comes with 4 signal pins (IN1, IN2, IN3, IN4) that receive the control signals from the Arduino. It also has 4 output pins (NCx, NOx, COMx) that connect to the high-voltage devices.
The Arduino 4 Channel Relay Module 4 Way Control Board with Optocoupler is compatible with a wide range of Arduino boards. It can handle a maximum voltage of 250VAC and a maximum current of 10A, making it suitable for high-power applications.
Product Specification:
- Control voltage: 5V
- Maximum voltage: 250VAC
- Maximum current: 10A
- Optocoupler: Yes
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Size: 75mm (length) * 55mm (width) * 19.3mm (height)
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.Weight: 61g
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PCB color: blue
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There are 4 fixing screw holes around the board, the diameter of the hole is 3.1mm, which is convenient for installation and fixing.
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The relay uses high-quality relay, single pole double throw. One common end, one normally open end, one normally closed end
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Optocoupler isolation, good anti-interference
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Low level pull-in, high level release. The status indicator is on when it is closed, and it is off when it is released.
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VCC is the system power and JD_VCC is the relay power. 5V relay is issued by default, just plug in the jumper cap
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Maximum relay output: DC 30V / 10A, AC 250V / 10A
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Wiring instructions:
VCC: system power positive
GND: system power negative
IN1–IN4: relay control portDocumentation:

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