diff --git a/OmniLinkBridge/Global.cs b/OmniLinkBridge/Global.cs
index 1136103..1c8ad4c 100644
--- a/OmniLinkBridge/Global.cs
+++ b/OmniLinkBridge/Global.cs
@@ -31,6 +31,7 @@ namespace OmniLinkBridge
         public static bool verbose_thermostat;
         public static bool verbose_unit;
         public static bool verbose_message;
+        public static bool verbose_lock;
 
         // mySQL Logging
         public static bool mysql_logging;
diff --git a/OmniLinkBridge/MQTT/HomeAssistant/Lock.cs b/OmniLinkBridge/MQTT/HomeAssistant/Lock.cs
new file mode 100644
index 0000000..98d2fb6
--- /dev/null
+++ b/OmniLinkBridge/MQTT/HomeAssistant/Lock.cs
@@ -0,0 +1,21 @@
+using Newtonsoft.Json;
+
+namespace OmniLinkBridge.MQTT.HomeAssistant
+{
+    public class Lock : Device
+    {
+        public string command_topic { get; set; }
+
+        [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
+        public string payload_lock { get; set; }
+
+        [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
+        public string payload_unlock { get; set; }
+
+        [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
+        public string state_locked { get; set; }
+
+        [JsonProperty(NullValueHandling = NullValueHandling.Ignore)]
+        public string state_unlocked { get; set; }
+    }
+}
diff --git a/OmniLinkBridge/MQTT/MappingExtensions.cs b/OmniLinkBridge/MQTT/MappingExtensions.cs
index b577d0a..a466bf0 100644
--- a/OmniLinkBridge/MQTT/MappingExtensions.cs
+++ b/OmniLinkBridge/MQTT/MappingExtensions.cs
@@ -605,5 +605,35 @@ namespace OmniLinkBridge.MQTT
             else
                 return "off";
         }
+
+        public static string ToTopic(this clsAccessControlReader reader, Topic topic)
+        {
+            return $"{Global.mqtt_prefix}/lock{reader.Number}/{topic}";
+        }
+
+        public static Lock ToConfig(this clsAccessControlReader reader)
+        {
+            Lock ret = new Lock
+            {
+                unique_id = $"{Global.mqtt_prefix}lock{reader.Number}",
+                name = Global.mqtt_discovery_name_prefix + reader.Name,
+                state_topic = reader.ToTopic(Topic.state),
+                command_topic = reader.ToTopic(Topic.command),
+                payload_lock = "lock",
+                payload_unlock = "unlock",
+                state_locked = "locked",
+                state_unlocked = "unlocked"
+            };
+
+            return ret;
+        }
+
+        public static string ToState(this clsAccessControlReader reader)
+        {
+            if (reader.LockStatus == 0)
+                return "locked";
+            else
+                return "unlocked";
+        }
     }
 }
diff --git a/OmniLinkBridge/MQTT/MessageProcessor.cs b/OmniLinkBridge/MQTT/MessageProcessor.cs
index a1e96e6..e06947f 100644
--- a/OmniLinkBridge/MQTT/MessageProcessor.cs
+++ b/OmniLinkBridge/MQTT/MessageProcessor.cs
@@ -49,6 +49,8 @@ namespace OmniLinkBridge.MQTT
                 ProcessButtonReceived(OmniLink.Controller.Buttons[id], topic, payload);
             else if (type == CommandTypes.message && id > 0 && id <= OmniLink.Controller.Messages.Count)
                 ProcessMessageReceived(OmniLink.Controller.Messages[id], topic, payload);
+            else if (type == CommandTypes.@lock && id <= OmniLink.Controller.AccessControlReaders.Count)
+                ProcessLockReceived(OmniLink.Controller.AccessControlReaders[id], topic, payload);
         }
 
         private static readonly IDictionary<AreaCommands, enuUnitCommand> AreaMapping = new Dictionary<AreaCommands, enuUnitCommand>
@@ -294,5 +296,24 @@ namespace OmniLinkBridge.MQTT
                 OmniLink.SendCommand(MessageMapping[cmd], par, (ushort)message.Number);
             }
         }
+
+        private static readonly IDictionary<LockCommands, enuUnitCommand> LockMapping = new Dictionary<LockCommands, enuUnitCommand>
+        {
+            { LockCommands.@lock, enuUnitCommand.Lock },
+            { LockCommands.unlock, enuUnitCommand.Unlock },
+        };
+
+        private void ProcessLockReceived(clsAccessControlReader reader, Topic command, string payload)
+        {
+            if (command == Topic.command && Enum.TryParse(payload, true, out LockCommands cmd))
+            {
+                if (reader.Number == 0)
+                    log.Debug("SetLock: 0 implies all locks will be changed");
+
+                log.Debug("SetLock: {id} to {value}", reader.Number, payload);
+
+                OmniLink.SendCommand(LockMapping[cmd], 0, (ushort)reader.Number);
+            }
+        }
     }
 }
diff --git a/OmniLinkBridge/MQTT/Parser/CommandTypes.cs b/OmniLinkBridge/MQTT/Parser/CommandTypes.cs
index 99e42f5..ade6e59 100644
--- a/OmniLinkBridge/MQTT/Parser/CommandTypes.cs
+++ b/OmniLinkBridge/MQTT/Parser/CommandTypes.cs
@@ -7,6 +7,7 @@
         unit,
         thermostat,
         button,
-        message
+        message,
+        @lock
     }
 }
diff --git a/OmniLinkBridge/MQTT/Parser/LockCommands.cs b/OmniLinkBridge/MQTT/Parser/LockCommands.cs
new file mode 100644
index 0000000..22e6eb1
--- /dev/null
+++ b/OmniLinkBridge/MQTT/Parser/LockCommands.cs
@@ -0,0 +1,8 @@
+namespace OmniLinkBridge.MQTT.Parser
+{
+    enum LockCommands
+    {
+        @lock,
+        unlock
+    }
+}
diff --git a/OmniLinkBridge/Modules/LoggerModule.cs b/OmniLinkBridge/Modules/LoggerModule.cs
index 0580c15..8b2f05f 100644
--- a/OmniLinkBridge/Modules/LoggerModule.cs
+++ b/OmniLinkBridge/Modules/LoggerModule.cs
@@ -39,6 +39,7 @@ namespace OmniLinkBridge.Modules
             omnilink.OnThermostatStatus += Omnilink_OnThermostatStatus;
             omnilink.OnUnitStatus += Omnilink_OnUnitStatus;
             omnilink.OnMessageStatus += Omnilink_OnMessageStatus;
+            omnilink.OnLockStatus += Omnilink_OnLockStatus;
             omnilink.OnSystemStatus += Omnilink_OnSystemStatus;
         }
 
@@ -199,10 +200,24 @@ namespace OmniLinkBridge.Modules
                 thermostatUsage++;
             }
 
+            ushort lockUsage = 0;
+            for (ushort i = 1; i <= omnilink.Controller.AccessControlReaders.Count; i++)
+            {
+                clsAccessControlReader reader = omnilink.Controller.AccessControlReaders[i];
+
+                if (reader.DefaultProperties == true)
+                    continue;
+
+                lockUsage++;
+
+                if(Global.verbose_lock)
+                    log.Verbose("Initial LockStatus {id} {name}, Status: {status}", i, reader.Name, reader.LockStatusText());
+            }
+
             using (LogContext.PushProperty("Telemetry", "ControllerUsage"))
                 log.Debug("Controller has {AreaUsage} areas, {ZoneUsage} zones, {UnitUsage} units, " +
-                    "{OutputUsage} outputs, {FlagUsage} flags, {ThermostatUsage} thermostats",
-                    areaUsage, zoneUsage, unitUsage, outputUsage, flagUsage, thermostatUsage);
+                    "{OutputUsage} outputs, {FlagUsage} flags, {ThermostatUsage} thermostats, {LockUsage} locks",
+                    areaUsage, zoneUsage, unitUsage, outputUsage, flagUsage, thermostatUsage, lockUsage);
         }
 
         private void Omnilink_OnAreaStatus(object sender, AreaStatusEventArgs e)
@@ -337,6 +352,12 @@ namespace OmniLinkBridge.Modules
                 Notification.Notify("Message", e.ID + " " + e.Message.Name + ", " + e.Message.StatusText());
         }
 
+        private void Omnilink_OnLockStatus(object sender, LockStatusEventArgs e)
+        {
+            if (Global.verbose_lock)
+                log.Verbose("LockStatus {id} {name}, Status: {status}", e.ID, e.Reader.Name, e.Reader.LockStatusText());
+        }
+
         private void Omnilink_OnSystemStatus(object sender, SystemStatusEventArgs e)
         {
             DBQueue(@"
diff --git a/OmniLinkBridge/Modules/MQTTModule.cs b/OmniLinkBridge/Modules/MQTTModule.cs
index adaf4ea..3868d60 100644
--- a/OmniLinkBridge/Modules/MQTTModule.cs
+++ b/OmniLinkBridge/Modules/MQTTModule.cs
@@ -50,6 +50,7 @@ namespace OmniLinkBridge.Modules
             OmniLink.OnThermostatStatus += Omnilink_OnThermostatStatus;
             OmniLink.OnButtonStatus += OmniLink_OnButtonStatus;
             OmniLink.OnMessageStatus += OmniLink_OnMessageStatus;
+            OmniLink.OnLockStatus += OmniLink_OnLockStatus;
             OmniLink.OnSystemStatus += OmniLink_OnSystemStatus;
 
             MessageProcessor = new MessageProcessor(omni);
@@ -169,6 +170,7 @@ namespace OmniLinkBridge.Modules
             PublishThermostats();
             PublishButtons();
             PublishMessages();
+            PublishLocks();
 
             PublishControllerStatus(ONLINE);
             PublishAsync($"{Global.mqtt_prefix}/model", OmniLink.Controller.GetModelText());
@@ -429,6 +431,29 @@ namespace OmniLinkBridge.Modules
             }
         }
 
+        private void PublishLocks()
+        {
+            log.Debug("Publishing {type}", "locks");
+
+            for (ushort i = 1; i <= OmniLink.Controller.AccessControlReaders.Count; i++)
+            {
+                clsAccessControlReader reader = OmniLink.Controller.AccessControlReaders[i];
+
+                if (reader.DefaultProperties == true)
+                {
+                    PublishAsync(reader.ToTopic(Topic.name), null);
+                    PublishAsync($"{Global.mqtt_discovery_prefix}/lock/{Global.mqtt_prefix}/lock{i}/config", null);
+                    continue;
+                }
+
+                PublishLockStateAsync(reader);
+
+                PublishAsync(reader.ToTopic(Topic.name), reader.Name);
+                PublishAsync($"{Global.mqtt_discovery_prefix}/lock/{Global.mqtt_prefix}/lock{i}/config",
+                    JsonConvert.SerializeObject(reader.ToConfig()));
+            }
+        }
+
         private void Omnilink_OnAreaStatus(object sender, AreaStatusEventArgs e)
         {
             if (!MqttClient.IsConnected)
@@ -514,6 +539,14 @@ namespace OmniLinkBridge.Modules
             PublishMessageStateAsync(e.Message);
         }
 
+        private void OmniLink_OnLockStatus(object sender, LockStatusEventArgs e)
+        {
+            if (!MqttClient.IsConnected)
+                return;
+
+            PublishLockStateAsync(e.Reader);
+        }
+
         private void OmniLink_OnSystemStatus(object sender, SystemStatusEventArgs e)
         {
             if (!MqttClient.IsConnected)
@@ -590,6 +623,11 @@ namespace OmniLinkBridge.Modules
             return PublishAsync(message.ToTopic(Topic.state), message.ToState());
         }
 
+        private Task PublishLockStateAsync(clsAccessControlReader reader)
+        {
+            return PublishAsync(reader.ToTopic(Topic.state), reader.ToState());
+        }
+
         private Task PublishAsync(string topic, string payload)
         {
             return MqttClient.PublishAsync(topic, payload, MqttQualityOfServiceLevel.AtMostOnce, true);
diff --git a/OmniLinkBridge/Modules/OmniLinkII.cs b/OmniLinkBridge/Modules/OmniLinkII.cs
index 2c8a1df..3363402 100644
--- a/OmniLinkBridge/Modules/OmniLinkII.cs
+++ b/OmniLinkBridge/Modules/OmniLinkII.cs
@@ -40,6 +40,7 @@ namespace OmniLinkBridge.Modules
         public event EventHandler<UnitStatusEventArgs> OnUnitStatus;
         public event EventHandler<ButtonStatusEventArgs> OnButtonStatus;
         public event EventHandler<MessageStatusEventArgs> OnMessageStatus;
+        public event EventHandler<LockStatusEventArgs> OnLockStatus;
         public event EventHandler<SystemStatusEventArgs> OnSystemStatus;
 
         private readonly AutoResetEvent trigger = new AutoResetEvent(false);
@@ -214,6 +215,7 @@ namespace OmniLinkBridge.Modules
             await GetNamed(enuObjectType.Unit);
             await GetNamed(enuObjectType.Message);
             await GetNamed(enuObjectType.Button);
+            await GetNamed(enuObjectType.AccessControlReader);
         }
 
         private async Task GetSystemFormats()
@@ -342,6 +344,9 @@ namespace OmniLinkBridge.Modules
                             case enuObjectType.Button:
                                 Controller.Buttons.CopyProperties(MSG);
                                 break;
+                            case enuObjectType.AccessControlReader:
+                                Controller.AccessControlReaders.CopyProperties(MSG);
+                                break;
                             default:
                                 break;
                         }
@@ -679,6 +684,17 @@ namespace OmniLinkBridge.Modules
                         });
                     }
                     break;
+                case enuObjectType.AccessControlLock:
+                    for (byte i = 0; i < MSG.AccessControlLockCount(); i++)
+                    {
+                        Controller.AccessControlReaders[MSG.ObjectNumber(i)].CopyExtendedStatus(MSG, i);
+                        OnLockStatus?.Invoke(this, new LockStatusEventArgs()
+                        {
+                            ID = MSG.ObjectNumber(i),
+                            Reader = Controller.AccessControlReaders[MSG.ObjectNumber(i)]
+                        });
+                    }
+                    break;
                 default:
                     if (Global.verbose_unhandled)
                     {
diff --git a/OmniLinkBridge/OmniLink/LockStatusEventArgs.cs b/OmniLinkBridge/OmniLink/LockStatusEventArgs.cs
new file mode 100644
index 0000000..87f40ac
--- /dev/null
+++ b/OmniLinkBridge/OmniLink/LockStatusEventArgs.cs
@@ -0,0 +1,11 @@
+using HAI_Shared;
+using System;
+
+namespace OmniLinkBridge.OmniLink
+{
+    public class LockStatusEventArgs : EventArgs
+    {
+        public ushort ID { get; set; }
+        public clsAccessControlReader Reader { get; set; }
+    }
+}
diff --git a/OmniLinkBridge/OmniLinkBridge.csproj b/OmniLinkBridge/OmniLinkBridge.csproj
index 5090558..88e60aa 100644
--- a/OmniLinkBridge/OmniLinkBridge.csproj
+++ b/OmniLinkBridge/OmniLinkBridge.csproj
@@ -83,6 +83,7 @@
     <Compile Include="CoreServer.cs" />
     <Compile Include="Modules\TimeSyncModule.cs" />
     <Compile Include="MQTT\HomeAssistant\Alarm.cs" />
+    <Compile Include="MQTT\HomeAssistant\Lock.cs" />
     <Compile Include="MQTT\OverrideUnit.cs" />
     <Compile Include="MQTT\Parser\AlarmCommands.cs" />
     <Compile Include="MQTT\AreaCommandCode.cs" />
@@ -95,6 +96,7 @@
     <Compile Include="MQTT\HomeAssistant\Climate.cs" />
     <Compile Include="MQTT\HomeAssistant\DeviceRegistry.cs" />
     <Compile Include="MQTT\Extensions.cs" />
+    <Compile Include="MQTT\Parser\LockCommands.cs" />
     <Compile Include="MQTT\Parser\MessageCommands.cs" />
     <Compile Include="MQTT\MessageProcessor.cs" />
     <Compile Include="MQTT\HomeAssistant\Number.cs" />
@@ -115,6 +117,7 @@
     <Compile Include="OmniLink\ButtonStatusEventArgs.cs" />
     <Compile Include="OmniLink\IOmniLinkII.cs" />
     <Compile Include="OmniLink\SystemEventType.cs" />
+    <Compile Include="OmniLink\LockStatusEventArgs.cs" />
     <Compile Include="OmniLink\UnitStatusEventArgs.cs" />
     <Compile Include="OmniLink\ThermostatStatusEventArgs.cs" />
     <Compile Include="OmniLink\MessageStatusEventArgs.cs" />
diff --git a/OmniLinkBridge/OmniLinkBridge.ini b/OmniLinkBridge/OmniLinkBridge.ini
index 817a21e..73e4cd3 100644
--- a/OmniLinkBridge/OmniLinkBridge.ini
+++ b/OmniLinkBridge/OmniLinkBridge.ini
@@ -22,6 +22,7 @@ verbose_thermostat_timer = yes
 verbose_thermostat = yes
 verbose_unit = yes
 verbose_message = yes
+verbose_lock = yes
 
 # mySQL Logging (yes/no)
 mysql_logging = no
diff --git a/OmniLinkBridge/Properties/AssemblyInfo.cs b/OmniLinkBridge/Properties/AssemblyInfo.cs
index a6dd9c0..8875857 100644
--- a/OmniLinkBridge/Properties/AssemblyInfo.cs
+++ b/OmniLinkBridge/Properties/AssemblyInfo.cs
@@ -10,7 +10,7 @@ using System.Runtime.InteropServices;
 [assembly: AssemblyConfiguration("")]
 [assembly: AssemblyCompany("Excalibur Partners, LLC")]
 [assembly: AssemblyProduct("OmniLinkBridge")]
-[assembly: AssemblyCopyright("Copyright © Excalibur Partners, LLC 2022")]
+[assembly: AssemblyCopyright("Copyright © Excalibur Partners, LLC 2024")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
 
diff --git a/OmniLinkBridge/Settings.cs b/OmniLinkBridge/Settings.cs
index 622ab3f..8ffa577 100644
--- a/OmniLinkBridge/Settings.cs
+++ b/OmniLinkBridge/Settings.cs
@@ -52,6 +52,7 @@ namespace OmniLinkBridge
             Global.verbose_thermostat = settings.ValidateBool("verbose_thermostat");
             Global.verbose_unit = settings.ValidateBool("verbose_unit");
             Global.verbose_message = settings.ValidateBool("verbose_message");
+            Global.verbose_lock = settings.ValidateBool("verbose_lock");
 
             // mySQL Logging
             Global.mysql_logging = settings.ValidateBool("mysql_logging");
diff --git a/OmniLinkBridgeTest/MQTTTest.cs b/OmniLinkBridgeTest/MQTTTest.cs
index 9b997da..1e7a239 100644
--- a/OmniLinkBridgeTest/MQTTTest.cs
+++ b/OmniLinkBridgeTest/MQTTTest.cs
@@ -286,6 +286,33 @@ namespace OmniLinkBridgeTest
 
             check(2, "SHOW", enuUnitCommand.ShowMsgWBeep, 0);
         }
+
+        [TestMethod]
+        public void LockCommand()
+        {
+            void check(ushort id, string payload, enuUnitCommand command)
+            {
+                SendCommandEventArgs actual = null;
+                omniLink.OnSendCommand += (sender, e) => { actual = e; };
+                messageProcessor.Process($"omnilink/lock{id}/command", payload);
+                SendCommandEventArgs expected = new SendCommandEventArgs()
+                {
+                    Cmd = command,
+                    Par = 0,
+                    Pr2 = id
+                };
+                Assert.AreEqual(expected, actual);
+            }
+
+            check(1, "lock", enuUnitCommand.Lock);
+            check(1, "unlock", enuUnitCommand.Unlock);
+
+            // Check all locks
+            check(0, "lock", enuUnitCommand.Lock);
+
+            // Check case insensitivity
+            check(2, "LOCK", enuUnitCommand.Lock);
+        }
     }
 }
 
diff --git a/OmniLinkBridgeTest/Properties/AssemblyInfo.cs b/OmniLinkBridgeTest/Properties/AssemblyInfo.cs
index fee5a78..e45d79a 100644
--- a/OmniLinkBridgeTest/Properties/AssemblyInfo.cs
+++ b/OmniLinkBridgeTest/Properties/AssemblyInfo.cs
@@ -7,7 +7,7 @@ using System.Runtime.InteropServices;
 [assembly: AssemblyConfiguration("")]
 [assembly: AssemblyCompany("Excalibur Partners, LLC")]
 [assembly: AssemblyProduct("OmniLinkBridgeTest")]
-[assembly: AssemblyCopyright("Copyright © Excalibur Partners, LLC 2022")]
+[assembly: AssemblyCopyright("Copyright © Excalibur Partners, LLC 2024")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
 
diff --git a/OmniLinkBridgeTest/SettingsTest.cs b/OmniLinkBridgeTest/SettingsTest.cs
index ee73b04..296acd2 100644
--- a/OmniLinkBridgeTest/SettingsTest.cs
+++ b/OmniLinkBridgeTest/SettingsTest.cs
@@ -78,7 +78,8 @@ namespace OmniLinkBridgeTest
                 "verbose_thermostat_timer",
                 "verbose_thermostat",
                 "verbose_unit",
-                "verbose_message"
+                "verbose_message",
+                "verbose_lock"
             })
             {
                 List<string> lines = new List<string>(RequiredSettings())
diff --git a/README.md b/README.md
index 6dd82e8..7b95dc8 100644
--- a/README.md
+++ b/README.md
@@ -312,6 +312,18 @@ PUB omnilink/messageX/command
 string show, show_no_beep, show_no_beep_or_led, clear
 ```
 
+### Locks
+```
+SUB omnilink/lockX/name
+string Lock name
+
+SUB omnilink/lockX/state
+string locked, unlocked
+
+PUB omnilink/lockX/command
+string lock, unlock
+```
+
 ## Web API
 To test the web service API you can use your browser to view a page or PowerShell (see below) to change a value.