diff --git a/homeassistant/components/alarmdecoder/__init__.py b/homeassistant/components/alarmdecoder/__init__.py
index c70bcdcc45c..178f31ee87a 100644
--- a/homeassistant/components/alarmdecoder/__init__.py
+++ b/homeassistant/components/alarmdecoder/__init__.py
@@ -2,7 +2,7 @@
 from datetime import timedelta
 import logging
 
-from alarmdecoder import AlarmDecoder
+from adext import AdExt
 from alarmdecoder.devices import SerialDevice, SocketDevice, USBDevice
 from alarmdecoder.util import NoDeviceError
 import voluptuous as vol
@@ -189,13 +189,13 @@ def setup(hass, config):
     if device_type == "socket":
         host = device[CONF_HOST]
         port = device[CONF_DEVICE_PORT]
-        controller = AlarmDecoder(SocketDevice(interface=(host, port)))
+        controller = AdExt(SocketDevice(interface=(host, port)))
     elif device_type == "serial":
         path = device[CONF_DEVICE_PATH]
         baud = device[CONF_DEVICE_BAUD]
-        controller = AlarmDecoder(SerialDevice(interface=path))
+        controller = AdExt(SerialDevice(interface=path))
     elif device_type == "usb":
-        AlarmDecoder(USBDevice.find())
+        AdExt(USBDevice.find())
         return False
 
     controller.on_message += handle_message
diff --git a/homeassistant/components/alarmdecoder/alarm_control_panel.py b/homeassistant/components/alarmdecoder/alarm_control_panel.py
index ac90ea1796f..0e3fddd7f58 100644
--- a/homeassistant/components/alarmdecoder/alarm_control_panel.py
+++ b/homeassistant/components/alarmdecoder/alarm_control_panel.py
@@ -178,28 +178,27 @@ class AlarmDecoderAlarmPanel(AlarmControlPanelEntity):
 
     def alarm_arm_away(self, code=None):
         """Send arm away command."""
-        if code:
-            if self._auto_bypass:
-                self.hass.data[DATA_AD].send(f"{code!s}6#")
-            self.hass.data[DATA_AD].send(f"{code!s}2")
-        elif not self._code_arm_required:
-            self.hass.data[DATA_AD].send("#2")
+        self.hass.data[DATA_AD].arm_away(
+            code=code,
+            code_arm_required=self._code_arm_required,
+            auto_bypass=self._auto_bypass,
+        )
 
     def alarm_arm_home(self, code=None):
         """Send arm home command."""
-        if code:
-            if self._auto_bypass:
-                self.hass.data[DATA_AD].send(f"{code!s}6#")
-            self.hass.data[DATA_AD].send(f"{code!s}3")
-        elif not self._code_arm_required:
-            self.hass.data[DATA_AD].send("#3")
+        self.hass.data[DATA_AD].arm_home(
+            code=code,
+            code_arm_required=self._code_arm_required,
+            auto_bypass=self._auto_bypass,
+        )
 
     def alarm_arm_night(self, code=None):
         """Send arm night command."""
-        if code:
-            self.hass.data[DATA_AD].send(f"{code!s}7")
-        elif not self._code_arm_required:
-            self.hass.data[DATA_AD].send("#7")
+        self.hass.data[DATA_AD].arm_night(
+            code=code,
+            code_arm_required=self._code_arm_required,
+            auto_bypass=self._auto_bypass,
+        )
 
     def alarm_toggle_chime(self, code=None):
         """Send toggle chime command."""
diff --git a/homeassistant/components/alarmdecoder/manifest.json b/homeassistant/components/alarmdecoder/manifest.json
index 48c5cb824ad..ea2c3fb01c8 100644
--- a/homeassistant/components/alarmdecoder/manifest.json
+++ b/homeassistant/components/alarmdecoder/manifest.json
@@ -2,6 +2,6 @@
   "domain": "alarmdecoder",
   "name": "AlarmDecoder",
   "documentation": "https://www.home-assistant.io/integrations/alarmdecoder",
-  "requirements": ["alarmdecoder==1.13.2"],
+  "requirements": ["adext==0.3"],
   "codeowners": ["@ajschmidt8"]
 }
diff --git a/requirements_all.txt b/requirements_all.txt
index 67cb729e96a..d349b173d86 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -131,6 +131,9 @@ adafruit-circuitpython-mcp230xx==2.2.2
 # homeassistant.components.androidtv
 adb-shell==0.1.3
 
+# homeassistant.components.alarmdecoder
+adext==0.3
+
 # homeassistant.components.adguard
 adguardhome==0.4.2
 
@@ -235,9 +238,6 @@ airly==0.0.2
 # homeassistant.components.aladdin_connect
 aladdin_connect==0.3
 
-# homeassistant.components.alarmdecoder
-alarmdecoder==1.13.2
-
 # homeassistant.components.alpha_vantage
 alpha_vantage==2.2.0