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4-channel 12V relay module with optocoupler isolation
4-channel 12V relay module with optocoupler isolation for Arduino, Raspberry Pi, and microcontroller control of AC/DC devices.
The 4-Channel 12V Relay Module with Optocoupler Isolation is a robust solution for controlling high-voltage AC or DC devices using low-voltage microcontroller signals. Each of the four relays can handle loads up to 10A, making it ideal for home automation, robotics, and industrial electronics projects.
Featuring optocoupler isolation, indicator LEDs, and screw terminals for secure connections, this module ensures safe operation while protecting your microcontroller from voltage spikes. It is compatible with Arduino, Raspberry Pi, ESP32, ESP8266, and other microcontrollers, providing reliable control for lights, motors, fans, and other appliances.

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- Compact design.
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- 30 mA idle
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- Â Communication: Asynchronous 9600 bps serial (8N1)
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 Interface operation is simpler
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5V single power supply.
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Output directly connected to the speaker, can drive 4 ohms 3W / 8 ohm 2W speakers
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Busy status output, can be connected to the microcontroller IO or indicator light, no need to be left floating.
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Dimension: 33*27.5mm
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With mounting holes
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- Material: ABS
- Color: White
- Material Diameter: 1.75mm
- Printing Temperature: 220° to 230°C
- Roundness Accuracy: +/- 0.5mm +/- 0.5mm
- Density: 1.31g/cm3 1.01g/cm3
- Mounted: Spool Mounted
- Net weight: 1kg
- Packaging Vacuum-sealed with desiccant to protect the filament from humidity
- Highly Detailed & Quality Outputs.
- Tried and Tested by Makenica.com
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- Environment friendly – ISO 9001 and ROHS certified

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