diff --git a/tests/test_profiles.py b/tests/test_profiles.py
new file mode 100644
index 00000000..d06b3d0a
--- /dev/null
+++ b/tests/test_profiles.py
@@ -0,0 +1,93 @@
+import logitech_receiver.hidpp20 as hidpp20
+import pytest
+
+
+def test_led_setting_bytes():
+    ebytes = bytes.fromhex("0A01020300500407000000")
+
+    setting = hidpp20.LEDEffectSetting.from_bytes(ebytes)
+
+    assert setting.ID == 0x0A
+    assert setting.color == 0x010203
+    assert setting.period == 0x0050
+    assert setting.form == 0x04
+    assert setting.intensity == 0x07
+
+    bytes_out = setting.to_bytes()
+
+    assert ebytes == bytes_out
+
+
+def test_button_bytes_1():
+    bbytes = bytes.fromhex("8000FFFF")
+
+    button = hidpp20.Button.from_bytes(bbytes)
+
+    assert button.behavior == 0x8
+    assert button.type == 0x00
+
+    bytes_out = button.to_bytes()
+
+    assert bbytes == bytes_out
+
+
+def test_button_bytes_2():
+    bbytes = bytes.fromhex("900aFF00")
+
+    button = hidpp20.Button.from_bytes(bbytes)
+
+    assert button.behavior == 0x9
+
+    bytes_out = button.to_bytes()
+
+    assert bbytes == bytes_out
+
+
+def test_button_bytes_3():
+    bbytes = bytes.fromhex("80020454")
+
+    button = hidpp20.Button.from_bytes(bbytes)
+
+    assert button.behavior == 0x8
+    assert button.modifiers == 0x04
+
+    bytes_out = button.to_bytes()
+
+    assert bbytes == bytes_out
+
+
+@pytest.fixture
+def profile_bytes():
+    return bytes.fromhex(
+        "01010290018003000700140028FFFFFF"
+        "FFFF0000000000000000000000000000"
+        "8000FFFF900aFF00800204548000FFFF"
+        "900aFF00800204548000FFFF900aFF00"
+        "800204548000FFFF900aFF0080020454"
+        "8000FFFF900aFF00800204548000FFFF"
+        "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
+        "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
+        "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
+        "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
+        "54004500370000000000000000000000"
+        "00000000000000000000000000000000"
+        "00000000000000000000000000000000"
+        "0A01020300500407000000FFFFFFFFFF"
+        "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"
+        "FFFFFFFFFFFFFFFFFFFFFFFFFF7C81"
+    )
+
+
+def test_profile_bytes(profile_bytes):
+    pbytes = profile_bytes
+    profile = hidpp20.OnboardProfile.from_bytes(2, 1, 16, 0, pbytes)
+
+    assert profile.sector == 2
+    assert profile.resolutions == [0x0190, 0x0380, 0x0700, 0x1400, 0x2800]
+    assert profile.buttons[0].to_bytes() == bytes.fromhex("8000FFFF")
+    assert profile.lighting[0].to_bytes() == bytes.fromhex("0A01020300500407000000")
+    assert profile.name == "TE7"
+
+    bytes_out = profile.to_bytes(255)
+
+    assert pbytes == bytes_out