I’m trying to control a relay using Python, but I’ve hit a roadblock.

Unfortunately, I couldn’t find the datasheet for this specific relay, which means I don’t have the correct commands to send.

Here’s what I’ve tried so far:

The computer recognizes the device as an HID (Human Interface Device).
I’ve attempted various commands, but none seem to work.

I tried this code, but I got an error because my relay didn’t take any commands:

import hid

def list_hid_devices():
    for device in hid.enumerate():
        keys = list(device.keys())
        keys.sort()
        for key in keys:
            print(f"{key}: {device[key]}")
        print()

def send_hid_command(vendor_id, product_id, command):
    try:
        device = hid.device()
        device.open(vendor_id, product_id)
        
        print(f"Manufacturer: {device.get_manufacturer_string()}")
        print(f"Product: {device.get_product_string()}")
        print(f"Serial No: {device.get_serial_number_string()}")
        
        device.write(command)
        
        response = device.read(64)
        print(f"Response: {response}")

        device.close()
    except Exception as e:
        print(f"Error: {e}")


print(" HID devices:")
list_hid_devices()

VENDOR_ID = 0x16C0  
PRODUCT_ID = 0x05DF  
relay_commands = [
    [0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], 
    [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],  
]

for command in relay_commands:
    send_hid_command(VENDOR_ID, PRODUCT_ID, command)

My terminal is like this:
Manufacturer: www.dcttech.com

Product: USBRelay4

Serial No:

Error: read error

Manufacturer: www.dcttech.com

Product: USBRelay4

Serial No:

Error: read error

Does anyone know the right commands for controlling this relay?
Where can I find the datasheet for this relay?