tek603

Async Python library for Proteus Ecometer ultrasonic liquid level sensors (TEK603 protocol) over USB serial or from an IP-socket (socat).

Measures distance to liquid via ultrasound and reports level, temperature, and tank capacity.

Installation

pip install tek603

Usage

import asyncio
import serial_asyncio_fast
from tek603 import TEK603

async def main():
    transport, protocol = await serial_asyncio_fast.create_serial_connection(
        asyncio.get_event_loop(),
        TEK603,
        "/dev/ttyUSB0",  # or "socket://192.168.2.97:2001"
        baudrate=115200
    )

    def on_data():
        print("Level:", protocol.read_sensor(2), "cm")
        print("Temp:", protocol.read_sensor(1), "°C")

    protocol.register_callback(on_data, dp_nbr=2)
    await asyncio.sleep(60)

asyncio.run(main())

Sensors

Hardware

• Proteus Ecometer USB (CP2102 / Silicon Labs USB-to-serial adapter)
• Protocol fully reverse-engineered; reference: sarnau.info

License

MIT