diff --git a/libdyson/__init__.py b/libdyson/__init__.py
index 1618ff4..6dda875 100644
--- a/libdyson/__init__.py
+++ b/libdyson/__init__.py
@@ -4,6 +4,7 @@
 from .const import (
     DEVICE_TYPE_360_EYE,
     DEVICE_TYPE_360_HEURIST,
+    DEVICE_TYPE_360_VIS_NAV,
     DEVICE_TYPE_PURE_COOL,
     DEVICE_TYPE_PURIFIER_COOL_E,
     DEVICE_TYPE_PURIFIER_COOL_K,
@@ -32,6 +33,7 @@
 from .discovery import DysonDiscovery  # noqa: F401
 from .dyson_360_eye import Dyson360Eye
 from .dyson_360_heurist import Dyson360Heurist
+from .dyson_360_vis_nav import Dyson360VisNav
 from .dyson_device import DysonDevice
 from .dyson_pure_cool import DysonPureCool
 from .dyson_pure_cool_link import DysonPureCoolLink
@@ -48,6 +50,8 @@ def get_device(serial: str, credential: str, device_type: str) -> Optional[Dyson
         return Dyson360Eye(serial, credential)
     if device_type == DEVICE_TYPE_360_HEURIST:
         return Dyson360Heurist(serial, credential)
+    if device_type == DEVICE_TYPE_360_VIS_NAV:
+        return Dyson360VisNav(serial, credential)
     if device_type in [
         DEVICE_TYPE_PURE_COOL_LINK_DESK,
         DEVICE_TYPE_PURE_COOL_LINK,
diff --git a/libdyson/cloud/account.py b/libdyson/cloud/account.py
index 1def0d8..4ce3378 100644
--- a/libdyson/cloud/account.py
+++ b/libdyson/cloud/account.py
@@ -35,6 +35,7 @@
 
 FILE_PATH = pathlib.Path(__file__).parent.absolute()
 
+
 class HTTPBearerAuth(AuthBase):
     """Attaches HTTP Bearder Authentication to the given Request object."""
 
@@ -202,7 +203,7 @@ def devices(self) -> List[DysonDeviceInfo]:
         devices = []
         response = self.request("GET", API_PATH_DEVICES)
         for raw in response.json():
-            if not raw.get("LocalCredentials"):
+            if raw.get("LocalCredentials") is None:
                 # Lightcycle lights don't have LocalCredentials.
                 # They're not supported so just skip.
                 # See https://github.com/shenxn/libdyson/issues/2 for more info
diff --git a/libdyson/const.py b/libdyson/const.py
index 2597888..534d925 100644
--- a/libdyson/const.py
+++ b/libdyson/const.py
@@ -3,6 +3,7 @@
 
 DEVICE_TYPE_360_EYE = "N223"
 DEVICE_TYPE_360_HEURIST = "276"
+DEVICE_TYPE_360_VIS_NAV = "277"
 DEVICE_TYPE_PURE_COOL_LINK_DESK = "469"  # DP01? DP02? This one's a bit older, and scraping the Dyson website is unclear
 DEVICE_TYPE_PURE_COOL_DESK = "520"  # AM06? This one's also a bit older, and also hard to scrape off the Dyson website
 DEVICE_TYPE_PURE_COOL_LINK = "475"  # TP02
diff --git a/libdyson/dyson_360_vis_nav.py b/libdyson/dyson_360_vis_nav.py
new file mode 100644
index 0000000..f2e3b30
--- /dev/null
+++ b/libdyson/dyson_360_vis_nav.py
@@ -0,0 +1,13 @@
+"""Dyson 360 Vis Nav vacuum robot."""
+
+from .const import DEVICE_TYPE_360_VIS_NAV
+from .dyson_360_heurist import Dyson360Heurist
+
+
+class Dyson360VisNav(Dyson360Heurist):
+    """Dyson 360 Vis Nav device."""
+
+    @property
+    def device_type(self) -> str:
+        """Return the device type."""
+        return DEVICE_TYPE_360_VIS_NAV
diff --git a/setup.cfg b/setup.cfg
index bf24216..6b148bd 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = libdyson-neon
-version = 1.3.0
+version = 1.4.0
 author = The libdyson Working Group
 author_email = dotvezz@gmail.com
 license = MIT License
diff --git a/tests/test_init.py b/tests/test_init.py
index fa09cf3..ec81b5f 100644
--- a/tests/test_init.py
+++ b/tests/test_init.py
@@ -6,6 +6,7 @@
 from libdyson import (
     DEVICE_TYPE_360_EYE,
     DEVICE_TYPE_360_HEURIST,
+    DEVICE_TYPE_360_VIS_NAV,
     DEVICE_TYPE_PURE_COOL,
     DEVICE_TYPE_PURIFIER_COOL_E,
     DEVICE_TYPE_PURIFIER_COOL_K,
@@ -22,6 +23,7 @@
     DEVICE_TYPE_PURIFIER_BIG_QUIET,
     Dyson360Eye,
     Dyson360Heurist,
+    Dyson360VisNav,
     DysonDevice,
     DysonPureCool,
     DysonPureCoolLink,
@@ -40,6 +42,7 @@
     [
         (DEVICE_TYPE_360_EYE, Dyson360Eye),
         (DEVICE_TYPE_360_HEURIST, Dyson360Heurist),
+        (DEVICE_TYPE_360_VIS_NAV, Dyson360VisNav),
         (DEVICE_TYPE_PURE_COOL_LINK_DESK, DysonPureCoolLink),
         (DEVICE_TYPE_PURE_COOL_LINK, DysonPureCoolLink),
         (DEVICE_TYPE_PURE_COOL, DysonPureCool),