4 Channel Relay Module with Micro USB

Technical specifications

• Operating voltage logic part: 5 V
• Current consumption: 400mA
• Number of channels: 4
• Baud rate: 9600bps
• Module control frequency: 1000 Hz
• Controlled voltage: 250VAC
• Maximum power current: 10 A

This product is a module with 4 power relays with which you can automate your home appliances, each relay can control powers up to 2.5kVA.

The advantage of this module is that it can also be controlled via USB by a computer. USB to serial conversion is based on the PL2303 integrated circuit.

Example of use on Linux

Set virtual serial port parameters:

/bin/stty -F /dev/ttyUSB0 9600 raw -echo

Device initialization:

echo -ne "x50x51" > /dev/ttyUSB0

Example of relay status change:

echo -ne "x51xA0" > /dev/ttyUSB0
echo -ne "x51xAB" > /dev/ttyUSB0

The last digit in the second hexadecimal number controls the status of the relays.

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