import asyncio
from bleak import BleakScanner, BleakClient

SERVICE_UUID = "7e2a0001-1111-2222-3333-444455556666"
CHAR_UUID    = "7e2a0002-1111-2222-3333-444455556666"

def handle_notify(sender, data):
    text = data.decode(errors="ignore")
    print("RX:", text)

async def main():
    print("Connecting to", "10:51:DB:1B:E7:1E")

    async with BleakClient("10:51:DB:1B:E7:1E") as client:
        print("Connected")
        await client.start_notify(CHAR_UUID, handle_notify)
        await asyncio.sleep(120)   # run for 1 minute

asyncio.run(main())