diff --git a/homeassistant/components/obihai/manifest.json b/homeassistant/components/obihai/manifest.json
index dd4df479af4..68045ff0584 100644
--- a/homeassistant/components/obihai/manifest.json
+++ b/homeassistant/components/obihai/manifest.json
@@ -3,7 +3,7 @@
     "name": "Obihai",
     "documentation": "https://www.home-assistant.io/components/obihai",
     "requirements": [
-      "pyobihai==1.1.1"
+      "pyobihai==1.2.0"
     ],
     "dependencies": [],
     "codeowners": ["@dshokouhi"]
diff --git a/homeassistant/components/obihai/sensor.py b/homeassistant/components/obihai/sensor.py
index fbf4fffb17f..4644875ee8b 100644
--- a/homeassistant/components/obihai/sensor.py
+++ b/homeassistant/components/obihai/sensor.py
@@ -44,27 +44,29 @@ def setup_platform(hass, config, add_entities, discovery_info=None):
 
     sensors = []
 
-    pyobihai = PyObihai()
+    pyobihai = PyObihai(host, username, password)
 
-    login = pyobihai.check_account(host, username, password)
+    login = pyobihai.check_account()
     if not login:
         _LOGGER.error("Invalid credentials")
         return
 
-    services = pyobihai.get_state(host, username, password)
+    serial = pyobihai.get_device_serial()
 
-    line_services = pyobihai.get_line_state(host, username, password)
+    services = pyobihai.get_state()
 
-    call_direction = pyobihai.get_call_direction(host, username, password)
+    line_services = pyobihai.get_line_state()
+
+    call_direction = pyobihai.get_call_direction()
 
     for key in services:
-        sensors.append(ObihaiServiceSensors(pyobihai, host, username, password, key))
+        sensors.append(ObihaiServiceSensors(pyobihai, serial, key))
 
     for key in line_services:
-        sensors.append(ObihaiServiceSensors(pyobihai, host, username, password, key))
+        sensors.append(ObihaiServiceSensors(pyobihai, serial, key))
 
     for key in call_direction:
-        sensors.append(ObihaiServiceSensors(pyobihai, host, username, password, key))
+        sensors.append(ObihaiServiceSensors(pyobihai, serial, key))
 
     add_entities(sensors)
 
@@ -72,15 +74,13 @@ def setup_platform(hass, config, add_entities, discovery_info=None):
 class ObihaiServiceSensors(Entity):
     """Get the status of each Obihai Lines."""
 
-    def __init__(self, pyobihai, host, username, password, service_name):
+    def __init__(self, pyobihai, serial, service_name):
         """Initialize monitor sensor."""
-        self._host = host
-        self._username = username
-        self._password = password
         self._service_name = service_name
         self._state = None
         self._name = f"{OBIHAI} {self._service_name}"
         self._pyobihai = pyobihai
+        self._unique_id = f"{serial}-{self._service_name}"
 
     @property
     def name(self):
@@ -92,6 +92,18 @@ class ObihaiServiceSensors(Entity):
         """Return the state of the sensor."""
         return self._state
 
+    @property
+    def available(self):
+        """Return if sensor is available."""
+        if self._state is not None:
+            return True
+        return False
+
+    @property
+    def unique_id(self):
+        """Return the unique ID."""
+        return self._unique_id
+
     @property
     def device_class(self):
         """Return the device class for uptime sensor."""
@@ -101,21 +113,17 @@ class ObihaiServiceSensors(Entity):
 
     def update(self):
         """Update the sensor."""
-        services = self._pyobihai.get_state(self._host, self._username, self._password)
+        services = self._pyobihai.get_state()
 
         if self._service_name in services:
             self._state = services.get(self._service_name)
 
-        services = self._pyobihai.get_line_state(
-            self._host, self._username, self._password
-        )
+        services = self._pyobihai.get_line_state()
 
         if self._service_name in services:
             self._state = services.get(self._service_name)
 
-        call_direction = self._pyobihai.get_call_direction(
-            self._host, self._username, self._password
-        )
+        call_direction = self._pyobihai.get_call_direction()
 
         if self._service_name in call_direction:
             self._state = call_direction.get(self._service_name)
diff --git a/requirements_all.txt b/requirements_all.txt
index 6481137f3e6..5bbd77f4d01 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1346,7 +1346,7 @@ pynx584==0.4
 pynzbgetapi==0.2.0
 
 # homeassistant.components.obihai
-pyobihai==1.1.1
+pyobihai==1.2.0
 
 # homeassistant.components.ombi
 pyombi==0.1.5