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Modul releu 5V, control serial din PC, USB
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Relay module with serial communication, with CH340, controllable directly through the serial port of the computer (with debug serial port software), which allows its ON or OFF control.
The board has an LED indicating relay status, on or off.
The module is connected and powered directly from the computer's USB port.
The board may be incompatible with the latest version of the CH340 driver (2023). Download the driver from the Download section.
Specifications:
Supply voltage: 5VDC, via USB
Relay: 250VAC, 10A (recommended 5A maximum to prevent contact welding)
Logic voltage: 5V
Communication IC: CH340
Interface: USB Tata 2.0
Use:
Install the CH340 driver and use a serial debugging software such as STC-ISP or SSCOM332. Set the baud rate to 9600 and send, in hexadecimal (hex) format "A0 01 01 A2" to activate the relay or "A0 01 00 A1" to deactivate the relay.
USB LC protocol:
Data (1) --- starting identity (the default is 0xA0)
Data (2) --- switch address code (default is 0x01, identifying the first channel switch)
Data (3) --- Operating Data (0x00 to "Off", 0x01 "On")
Date (4) --- checksum
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