diff --git a/CODEOWNERS b/CODEOWNERS
index 1bcffad1d17ea..9730c96a57349 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -17,6 +17,7 @@ homeassistant/components/abode/* @shred86
 homeassistant/components/adguard/* @frenck
 homeassistant/components/airly/* @bieniu
 homeassistant/components/airvisual/* @bachya
+homeassistant/components/alarmdecoder/* @ajschmidt8
 homeassistant/components/alexa/* @home-assistant/cloud @ochlocracy
 homeassistant/components/almond/* @gcampax @balloob
 homeassistant/components/alpha_vantage/* @fabaff
diff --git a/homeassistant/components/alarmdecoder/__init__.py b/homeassistant/components/alarmdecoder/__init__.py
index a990de9bf988f..5e143fcca81eb 100644
--- a/homeassistant/components/alarmdecoder/__init__.py
+++ b/homeassistant/components/alarmdecoder/__init__.py
@@ -33,6 +33,7 @@
 CONF_ZONES = "zones"
 CONF_RELAY_ADDR = "relayaddr"
 CONF_RELAY_CHAN = "relaychan"
+CONF_CODE_ARM_REQUIRED = "code_arm_required"
 
 DEFAULT_DEVICE_TYPE = "socket"
 DEFAULT_DEVICE_HOST = "localhost"
@@ -42,6 +43,7 @@
 
 DEFAULT_AUTO_BYPASS = False
 DEFAULT_PANEL_DISPLAY = False
+DEFAULT_CODE_ARM_REQUIRED = True
 
 DEFAULT_ZONE_TYPE = "opening"
 
@@ -105,6 +107,9 @@
                     CONF_PANEL_DISPLAY, default=DEFAULT_PANEL_DISPLAY
                 ): cv.boolean,
                 vol.Optional(CONF_AUTO_BYPASS, default=DEFAULT_AUTO_BYPASS): cv.boolean,
+                vol.Optional(
+                    CONF_CODE_ARM_REQUIRED, default=DEFAULT_CODE_ARM_REQUIRED
+                ): cv.boolean,
                 vol.Optional(CONF_ZONES): {vol.Coerce(int): ZONE_SCHEMA},
             }
         )
@@ -121,6 +126,7 @@ def setup(hass, config):
     device = conf[CONF_DEVICE]
     display = conf[CONF_PANEL_DISPLAY]
     auto_bypass = conf[CONF_AUTO_BYPASS]
+    code_arm_required = conf[CONF_CODE_ARM_REQUIRED]
     zones = conf.get(CONF_ZONES)
 
     device_type = device[CONF_DEVICE_TYPE]
@@ -206,7 +212,11 @@ def handle_rel_message(sender, message):
     hass.bus.async_listen_once(EVENT_HOMEASSISTANT_STOP, stop_alarmdecoder)
 
     load_platform(
-        hass, "alarm_control_panel", DOMAIN, {CONF_AUTO_BYPASS: auto_bypass}, config
+        hass,
+        "alarm_control_panel",
+        DOMAIN,
+        {CONF_AUTO_BYPASS: auto_bypass, CONF_CODE_ARM_REQUIRED: code_arm_required},
+        config,
     )
 
     if zones:
diff --git a/homeassistant/components/alarmdecoder/alarm_control_panel.py b/homeassistant/components/alarmdecoder/alarm_control_panel.py
index 06783df674da0..57004191064b4 100644
--- a/homeassistant/components/alarmdecoder/alarm_control_panel.py
+++ b/homeassistant/components/alarmdecoder/alarm_control_panel.py
@@ -21,7 +21,13 @@
 )
 import homeassistant.helpers.config_validation as cv
 
-from . import CONF_AUTO_BYPASS, DATA_AD, DOMAIN, SIGNAL_PANEL_MESSAGE
+from . import (
+    CONF_AUTO_BYPASS,
+    CONF_CODE_ARM_REQUIRED,
+    DATA_AD,
+    DOMAIN,
+    SIGNAL_PANEL_MESSAGE,
+)
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -39,7 +45,8 @@ def setup_platform(hass, config, add_entities, discovery_info=None):
         return
 
     auto_bypass = discovery_info[CONF_AUTO_BYPASS]
-    entity = AlarmDecoderAlarmPanel(auto_bypass)
+    code_arm_required = discovery_info[CONF_CODE_ARM_REQUIRED]
+    entity = AlarmDecoderAlarmPanel(auto_bypass, code_arm_required)
     add_entities([entity])
 
     def alarm_toggle_chime_handler(service):
@@ -70,7 +77,7 @@ def alarm_keypress_handler(service):
 class AlarmDecoderAlarmPanel(AlarmControlPanel):
     """Representation of an AlarmDecoder-based alarm panel."""
 
-    def __init__(self, auto_bypass):
+    def __init__(self, auto_bypass, code_arm_required):
         """Initialize the alarm panel."""
         self._display = ""
         self._name = "Alarm Panel"
@@ -85,6 +92,7 @@ def __init__(self, auto_bypass):
         self._ready = None
         self._zone_bypassed = None
         self._auto_bypass = auto_bypass
+        self._code_arm_required = code_arm_required
 
     async def async_added_to_hass(self):
         """Register callbacks."""
@@ -140,6 +148,11 @@ def supported_features(self) -> int:
         """Return the list of supported features."""
         return SUPPORT_ALARM_ARM_HOME | SUPPORT_ALARM_ARM_AWAY | SUPPORT_ALARM_ARM_NIGHT
 
+    @property
+    def code_arm_required(self):
+        """Whether the code is required for arm actions."""
+        return self._code_arm_required
+
     @property
     def device_state_attributes(self):
         """Return the state attributes."""
@@ -153,6 +166,7 @@ def device_state_attributes(self):
             "programming_mode": self._programming_mode,
             "ready": self._ready,
             "zone_bypassed": self._zone_bypassed,
+            "code_arm_required": self._code_arm_required,
         }
 
     def alarm_disarm(self, code=None):
@@ -166,6 +180,8 @@ def alarm_arm_away(self, code=None):
             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")
 
     def alarm_arm_home(self, code=None):
         """Send arm home command."""
@@ -173,11 +189,15 @@ def alarm_arm_home(self, code=None):
             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")
 
     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")
 
     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 f146f6f4a7e0e..9824b20db2a9f 100644
--- a/homeassistant/components/alarmdecoder/manifest.json
+++ b/homeassistant/components/alarmdecoder/manifest.json
@@ -1,10 +1,8 @@
 {
-  "domain": "alarmdecoder",
-  "name": "AlarmDecoder",
-  "documentation": "https://www.home-assistant.io/integrations/alarmdecoder",
-  "requirements": [
-    "alarmdecoder==1.13.2"
-  ],
-  "dependencies": [],
-  "codeowners": []
+    "domain": "alarmdecoder",
+    "name": "AlarmDecoder",
+    "documentation": "https://www.home-assistant.io/integrations/alarmdecoder",
+    "requirements": ["alarmdecoder==1.13.2"],
+    "dependencies": [],
+    "codeowners": ["@ajschmidt8"]
 }