salus-it600-client 0.3.4

Asynchronous Python client for Salus iT600 local gateways

salus-it600-client

Asynchronous Python client for Salus iT600 devices.

For end users

See https://github.com/Jordi-14/homeassistant_salus to use this in Home Assistant.

About

This package allows you to control and monitor your Salus iT600 smart home devices locally through Salus UG600 universal gateway. Currently heating thermostats, binary sensors, temperature sensors, covers and switches are supported. You have any other devices and would like to contribute - you are welcome to create an issue or submit a pull request.

Installation

pip install salus-it600-client

Migration from pyit600

salus-it600-client is a renamed maintained successor of pyit600. It does not provide the old pyit600 import namespace, so callers must update imports:

from salus_it600.gateway import IT600Gateway
from salus_it600.exceptions import IT600ConnectionError

If another project depends on this package, replace the old dependency with:

salus-it600-client>=0.1.0

The first maintained release is 0.1.0. It keeps the public API close to pyit600 0.5.1, while moving compatibility fixes for current Salus gateway payloads into this library.

Usage

• Instantiate the IT600Gateway device with local ip address and EUID of your gateway. You can find EUID written down on the bottom of your gateway (eg. 001E5E0D32906128).
• Status can be polled using the poll_status() command.
• Callbacks to be notified of state updates can be added with the add_climate_update_callback(method) or add_sensor_update_callback(method) method.

Basic example

from salus_it600.gateway import IT600Gateway

async with IT600Gateway(host=args.host, euid=args.euid) as gateway:
	await gateway.connect()
	await gateway.poll_status()

	climate_devices = gateway.get_climate_devices()

	print("All climate devices:")
	print(repr(climate_devices))

	for climate_device_id in climate_devices:
		print(f"Climate device {climate_device_id} status:")
		print(repr(climate_devices.get(climate_device_id)))

		print(f"Setting heating device {climate_device_id} temperature to 21 degrees celsius")
		await gateway.set_climate_device_temperature(climate_device_id, 21)

Supported devices

Thermostats:

• HTRP-RF(50)
• TS600
• VS10WRF/VS10BRF
• VS20WRF/VS20BRF
• SQ610
• SQ610RF
• FC600

Binary sensors:

• SW600
• WLS600
• OS600
• SD600 (sometimes gateway may not expose required information for these devices to be detected, reason is unknown)
• TRV10RFM (only heating state on/off)
• RX10RF (only heating state on/off)

Temperature sensors:

• PS600

Switch devices:

• SPE600
• RS600
• SR600

Cover devices:

• RS600

Unsupported devices

Buttons perform actions only in Salus Smart Home app:

• SB600
• CSB600

Untested devices

These switch devices have not been tested, but may work:

• SP600

These binary sensors have not been tested, but may work:

• MS600

Troubleshooting

If you can't connect using EUID written down on the bottom of your gateway (which looks something like 001E5E0D32906128), try using 0000000000000000 as EUID.

Also check if you have "Local Wifi Mode" enabled:

• Open Smart Home app on your phone
• Sign in
• Double tap your Gateway to open info screen
• Press gear icon to enter configuration
• Scroll down a bit and check if "Disable Local WiFi Mode" is set to "No"
• Scroll all the way down and save settings
• Restart Gateway by unplugging/plugging USB power

Extending Device Support

Architecture Overview

Device detection and parsing uses a layered pipeline:

poll_status() readall request
    ↓
Extract device-type-specific summaries (lambda filters)
    ↓
For each type: _refresh_device_collection()
    ├─ Make "deviceid" request for detailed payloads
    ├─ Validate gateway response
    ├─ Call type-specific parser for each device
    ├─ Catch parsing errors, log, continue
    └─ Update internal device dicts + callbacks

Detailed protocol notes are maintained in docs/device-protocol.md.

Device models are identified by protocol signatures in the JSON payloads:

• Climate: sIT600TH or sTherS section present
• Binary sensor: sIASZS section, or model in BINARY_RELAY_MODELS
• Sensor: sTempS.MeasuredValue_x100 present
• Switch: sOnOffS.OnOff present
• Cover: sLevelS.CurrentLevel present

Adding a New Device Model

Step 1: Identify Protocol Signature

Use main.py --debug to capture a readall response. Find your device in the JSON output and note which payload sections it contains.

Example: A window contact sensor contains sIASZS.ErrorIASZSAlarmed1 → binary sensor.

Step 2: Add Model to Registry

Edit salus_it600/device_models.py:

# Define model identifier
MODEL_MYDEVICE = "MyDevice123"

# Add to classification if needed
BINARY_SENSOR_DEVICE_CLASSES = {
    # ...existing...
    MODEL_MYDEVICE: "custom_class",  # Use Home Assistant device class
}

Step 3: Create Parser Function

Add to salus_it600/gateway.py:

def _parse_mydevice_device(device_status: dict[str, Any]) -> MyDeviceModel | None:
    """Parse one MyDevice from gateway payload.
    
    Protocol fields:
    - `MyPayloadSection.StateField`: What this means (divide by what)
    
    Returns:
        MyDeviceModel or None if invalid/filtered
    """
    unique_id = device_status.get("data", {}).get("UniID")
    if unique_id is None:
        return None
    
    state_field = device_status.get("MyPayloadSection", {}).get("StateField")
    if state_field is None:
        return None
    
    return MyDeviceModel(
        **_common_device_args(device_status, unique_id),
        # device-specific fields...
    )

Step 4: Register Parser in Poll Loop

In poll_status() method:

# Add filter for your device type
my_devices = list(
    filter(lambda x: "MyPayloadSection" in x, device_items)
)

# Connect to refresh pipeline
await self._refresh_device_collection(
    my_devices,
    device_type="mydevice",
    state_attr="_mydevice_devices",
    parser=_parse_mydevice_device,
    callback=self._send_mydevice_update_callback,
    send_callback=send_callback,
)

Step 5: Add Callback Methods

async def add_mydevice_update_callback(
    self,
    method: Callable[[Any], Awaitable[None]],
) -> None:
    """Add listener for MyDevice state updates."""
    self._mydevice_update_callbacks.append(method)

async def _send_mydevice_update_callback(self, device_id: str) -> None:
    """Notify MyDevice update subscribers."""
    for callback in self._mydevice_update_callbacks:
        await callback(device_id=device_id)

def get_mydevice_devices(self) -> dict[str, MyDeviceModel]:
    """Return all MyDevice devices."""
    return self._mydevice_devices

def get_mydevice_device(self, device_id: str) -> MyDeviceModel | None:
    """Return one MyDevice device."""
    return self._mydevice_devices.get(device_id)

Step 6: Add Tests

Create tests/test_mydevice.py:

async def test_parse_mydevice_valid():
    """Parse valid MyDevice payload."""
    payload = {
        "data": {"UniID": "device-1"},
        "MyPayloadSection": {"StateField": 123},
        # ...minimal required fields...
    }
    device = _parse_mydevice_device(payload)
    assert device is not None
    assert device.unique_id == "device-1"

async def test_parse_mydevice_missing_field():
    """Skip MyDevice with missing required field."""
    payload = {"data": {"UniID": "device-1"}}  # Missing MyPayloadSection
    device = _parse_mydevice_device(payload)
    assert device is None

async def test_refresh_mydevice_collection():
    """Refresh MyDevice via _refresh_device_collection."""
    # Use FakeSession, mock _make_encrypted_request, verify parsing

SQ610 Quantum Thermostat Special Handling

SQ610 thermostats have unusual protocol features. These are already handled by the library, but here's what makes them special:

Humidity in Wrong Field

SQ610 doesn't report humidity normally. Instead, humidity is in sIT600TH.SunnySetpoint_x100:

# Library does this automatically for SQ610:
if is_sq610_model(model):
    humidity = th.get("SunnySetpoint_x100") / 100
else:
    humidity = None

Dual Setpoints

SQ610 has separate heating and cooling setpoints depending on system mode:

# iT600 (simple): Always use HeatingSetpoint_x100
# SQ610 (complex): Use Heating OR Cooling depending on SystemMode
is_heating = ther["SystemMode"] == 4
target = ther["HeatingSetpoint_x100"] if is_heating else ther["CoolingSetpoint_x100"]

Hold Type Extension

SQ610 supports hold type 0 (auto return to schedule), unavailable on standard models:

SQ610_HOLD_AUTO = 0        # Return to schedule
SQ610_HOLD_PERMANENT = 2   # Keep setpoint
SQ610_HOLD_STANDBY = 7     # Off

Write Property Names

When commanding SQ610 devices, use the correct write property names:

# Import from device_models
from salus_it600.device_models import SQ610_WRITE_HEATING_SETPOINT
from salus_it600.device_models import SQ610_WRITE_SYSTEM_MODE

# Use in write request
{
    "sTherS": {
        SQ610_WRITE_HEATING_SETPOINT: int(temperature * 100)
    },
    "sTherS": {
        SQ610_WRITE_SYSTEM_MODE: 4  # 3=cool, 4=heat, 5=emergency
    }
}

All SQ610 protocol constants are centralized in salus_it600/device_models.py as single source of truth.

Contributing

If you want to help to get your device supported, open GitHub issue and add your device model number and output of main.py program. Be sure to run this program with --debug option.

Development Checks

Install development dependencies:

python3 -m pip install -e ".[dev]"

Run the local verification set before opening a PR:

python3 -m ruff check salus_it600 tests main.py
python3 -m mypy
python3 -m unittest
python3 -m coverage run -m unittest
python3 -m coverage report

The test suite covers request validation, device parsing, complete mocked polling cycles, callbacks, and write-command state transitions.

Release publishing is documented in RELEASE.md.

Project origin

This project is a maintained fork/successor of epoplavskis/pyit600. It was renamed from the pyit600 Python import namespace to salus_it600 to avoid collisions with the original unmaintained package while preserving the original MIT license and attribution.