diff --git a/src/pms/__init__.py b/src/pms/__init__.py
index c5b76af..5fb2db0 100644
--- a/src/pms/__init__.py
+++ b/src/pms/__init__.py
@@ -1,3 +1,8 @@
+from loguru import logger
+
+logger.disable("pms")  # disable logging by default
+
+
 class SensorWarning(UserWarning):
     """Recoverable errors"""
 
diff --git a/src/pms/cli.py b/src/pms/cli.py
index 21d1bd7..76ea6d8 100644
--- a/src/pms/cli.py
+++ b/src/pms/cli.py
@@ -10,12 +10,11 @@
     import importlib_metadata as metadata
 
 from loguru import logger
-from typer import Argument, Context, Exit, Option, Typer, echo
+from typer import Argument, Context, Exit, Option, Typer, echo, run
 
 from pms.core import MessageReader, SensorReader, Supported, exit_on_fail
 
-main = Typer(help="Data acquisition and logging for Air Quality Sensors with UART interface")
-
+app = Typer(help="Data acquisition and logging for Air Quality Sensors with UART interface")
 
 """
 Extra cli commands from plugins
@@ -23,7 +22,12 @@
 additional Typer commands are loaded from plugins (entry points) advertized as `"pypms.extras"`
 """
 for ep in metadata.entry_points(group="pypms.extras"):
-    main.command(name=ep.name)(ep.load())
+    app.command(name=ep.name)(ep.load())
+
+
+def main():  # pragma: no cover
+    logger.enable("pms")
+    app()
 
 
 def version_callback(value: bool):  # pragma: no cover
@@ -35,7 +39,7 @@ def version_callback(value: bool):  # pragma: no cover
     raise Exit()
 
 
-@main.callback()
+@app.callback()
 def callback(
     ctx: Context,
     model: Supported = Option(Supported.default, "--sensor-model", "-m", help="sensor model"),
@@ -60,7 +64,7 @@ def callback(
     ctx.obj = {"reader": SensorReader(model, port, seconds, samples)}
 
 
-@main.command()
+@app.command()
 def info(ctx: Context):  # pragma: no cover
     """Information about the sensor observations"""
     sensor = ctx.obj["reader"].sensor
@@ -84,7 +88,7 @@ def __str__(self) -> str:
         return self.value
 
 
-@main.command()
+@app.command()
 def serial(
     ctx: Context,
     format: Optional[Format] = Option(None, "--format", "-f", help="formatted output"),
@@ -111,7 +115,7 @@ def serial(
                 echo(str(obs))
 
 
-@main.command()
+@app.command()
 def csv(
     ctx: Context,
     capture: bool = Option(False, "--capture", help="write raw messages instead of observations"),
diff --git a/tests/core/reader/test_SensorReader.py b/tests/core/reader/test_SensorReader.py
index 3db3d02..3d24263 100644
--- a/tests/core/reader/test_SensorReader.py
+++ b/tests/core/reader/test_SensorReader.py
@@ -1,10 +1,19 @@
 import pytest
+from _pytest.logging import LogCaptureFixture
+from loguru import logger
 
 from pms import SensorWarmingUp, SensorWarning
 from pms.core.reader import SensorReader, UnableToRead
 from pms.core.sensor import Sensor
 
 
+@pytest.fixture
+def caplog(caplog: LogCaptureFixture):
+    handler_id = logger.add(caplog.handler, format="{message}")
+    yield caplog
+    logger.remove(handler_id)
+
+
 @pytest.fixture
 def mock_sleep(monkeypatch):
     def sleep(seconds):
@@ -233,3 +242,15 @@ def test_reader_sensor_no_response(reader: SensorReader):
             pass
 
     assert "did not respond" in str(e.value)
+
+
+def test_logging(reader: SensorReader, capfd, caplog):
+    with reader:
+        obs = tuple(reader())
+
+    # check data was read
+    assert len(obs) == 1
+    assert obs[0].pm10 == 11822  # type:ignore
+
+    # check no logs output
+    assert caplog.text == ""
diff --git a/tests/extra/test_cli.py b/tests/extra/test_cli.py
index 63e2dc7..7c0893c 100644
--- a/tests/extra/test_cli.py
+++ b/tests/extra/test_cli.py
@@ -39,9 +39,9 @@ def client_sub(
 
 def test_mqtt(capture, mock_mqtt):
 
-    from pms.cli import main
+    from pms.cli import app
 
-    result = runner.invoke(main, capture.options("mqtt"))
+    result = runner.invoke(app, capture.options("mqtt"))
     assert result.exit_code == 0
 
 
@@ -62,9 +62,9 @@ def pub(*, time: int, tags: Dict[str, str], data: Dict[str, float]) -> None:
 
 def test_influxdb(capture, mock_influxdb):
 
-    from pms.cli import main
+    from pms.cli import app
 
-    result = runner.invoke(main, capture.options("influxdb"))
+    result = runner.invoke(app, capture.options("influxdb"))
     assert result.exit_code == 0
 
 
@@ -110,8 +110,8 @@ def client_sub(
 
 def test_bridge(mock_bridge):
 
-    from pms.cli import main
+    from pms.cli import app
 
     capture = mock_bridge
-    result = runner.invoke(main, capture.options("bridge"))
+    result = runner.invoke(app, capture.options("bridge"))
     assert result.exit_code == 0
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 4facb64..72837b5 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -9,18 +9,18 @@
 @pytest.mark.parametrize("format", {"csv", "hexdump"})
 def test_serial(capture, format):
 
-    from pms.cli import main
+    from pms.cli import app
 
-    result = runner.invoke(main, capture.options(f"serial_{format}"))
+    result = runner.invoke(app, capture.options(f"serial_{format}"))
     assert result.exit_code == 0
     assert result.stdout == capture.output(format)
 
 
 def test_csv(capture):
 
-    from pms.cli import main
+    from pms.cli import app
 
-    result = runner.invoke(main, capture.options("csv"))
+    result = runner.invoke(app, capture.options("csv"))
     assert result.exit_code == 0
 
     csv = Path(capture.options("csv")[-1])
@@ -31,15 +31,15 @@ def test_csv(capture):
 
 def test_capture_decode(capture):
 
-    from pms.cli import main
+    from pms.cli import app
 
-    result = runner.invoke(main, capture.options("capture"))
+    result = runner.invoke(app, capture.options("capture"))
     assert result.exit_code == 0
 
     csv = Path(capture.options("capture")[-1])
     assert csv.exists()
 
-    result = runner.invoke(main, capture.options("decode"))
+    result = runner.invoke(app, capture.options("decode"))
     assert result.exit_code == 0
     csv.unlink()
     assert result.stdout == capture.output("csv")