diff --git a/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/GeothermalResearchInstitute.ServerConsole.csproj b/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/GeothermalResearchInstitute.ServerConsole.csproj
index ff3e9705..196e6c7e 100644
--- a/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/GeothermalResearchInstitute.ServerConsole.csproj
+++ b/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/GeothermalResearchInstitute.ServerConsole.csproj
@@ -12,6 +12,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="2.2.6" DevelopmentDependency="true" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="2.2.6" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="2.2.6" />
     <PackageReference Include="Microsoft.Extensions.Configuration.CommandLine" Version="2.2.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="2.2.4" />
diff --git a/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/GrpcService/DeviceServiceImpl.cs b/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/GrpcService/DeviceServiceImpl.cs
index c26a11b3..a2acbd3c 100644
--- a/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/GrpcService/DeviceServiceImpl.cs
+++ b/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/GrpcService/DeviceServiceImpl.cs
@@ -147,10 +147,26 @@ public override Task<Device> UpdateDevice(UpdateDeviceRequest request, ServerCal
                 switch (path)
                 {
                     case "working_mode":
+                        deviceStates.WorkingMode = request.Device.WorkingMode;
                         break;
                     case "device_option":
+                        deviceStates.SummerTemperature = request.Device.DeviceOption.SummerTemperature;
+                        deviceStates.WinterTemperature = request.Device.DeviceOption.WinterTemperature;
+                        deviceStates.WarmCapacity = request.Device.DeviceOption.WarmCapacity;
+                        deviceStates.ColdCapacity = request.Device.DeviceOption.ColdCapacity;
+                        deviceStates.FlowCapacity = request.Device.DeviceOption.FlowCapacity;
+                        deviceStates.RateCapacity = request.Device.DeviceOption.RateCapacity;
+                        deviceStates.MotorMode = request.Device.DeviceOption.MotorMode;
+                        deviceStates.WaterPumpMode = request.Device.DeviceOption.WaterPumpMode;
                         break;
                     case "controls":
+                        deviceStates.DevicePower = request.Device.Controls.DevicePower;
+                        deviceStates.ExhaustPower = request.Device.Controls.ExhaustPower;
+                        deviceStates.HeatPumpAuto = request.Device.Controls.HeatPumpAuto;
+                        deviceStates.HeatPumpPower = request.Device.Controls.HeatPumpPower;
+                        deviceStates.HeatPumpFanOn = request.Device.Controls.HeatPumpFanOn;
+                        deviceStates.HeatPumpCompressorOn = request.Device.Controls.HeatPumpCompressorOn;
+                        deviceStates.HeatPumpFourWayReversingValue = request.Device.Controls.HeatPumpFourWayReversingValue;
                         break;
                     default:
                         throw new RpcException(new Status(StatusCode.InvalidArgument, "Invalid update_mask."));
diff --git a/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/Model/BjdireContext.cs b/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/Model/BjdireContext.cs
index a38c03c4..c314da92 100644
--- a/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/Model/BjdireContext.cs
+++ b/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/Model/BjdireContext.cs
@@ -9,13 +9,13 @@ namespace GeothermalResearchInstitute.ServerConsole.Model
 {
     public class BjdireContext : DbContext
     {
+        public BjdireContext(DbContextOptions<BjdireContext> options)
+            : base(options)
+        {
+        }
+
         public DbSet<DeviceActualStates> DevicesActualStates { get; set; }
 
         public DbSet<DeviceDesiredStates> DevicesDesiredStates { get; set; }
-
-        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
-        {
-            optionsBuilder.UseSqlite("Data Source=bjdire.sqlite");
-        }
     }
 }
diff --git a/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/Model/BjdireContextFactory.cs b/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/Model/BjdireContextFactory.cs
new file mode 100644
index 00000000..fc035765
--- /dev/null
+++ b/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/Model/BjdireContextFactory.cs
@@ -0,0 +1,20 @@
+// <copyright file="BjdireContextFactory.cs" company="Shuai Zhang">
+// Copyright Shuai Zhang. All rights reserved.
+// Licensed under the GPLv3 license. See LICENSE file in the project root for full license information.
+// </copyright>
+
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Design;
+
+namespace GeothermalResearchInstitute.ServerConsole.Model
+{
+    public class BjdireContextFactory : IDesignTimeDbContextFactory<BjdireContext>
+    {
+        public BjdireContext CreateDbContext(string[] args)
+        {
+            var builder = new DbContextOptionsBuilder<BjdireContext>();
+            Program.DbContextOptionsBuilderAction.Invoke(builder);
+            return new BjdireContext(builder.Options);
+        }
+    }
+}
diff --git a/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/Model/DeviceStates.cs b/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/Model/DeviceStates.cs
index 848405dc..37a0008e 100644
--- a/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/Model/DeviceStates.cs
+++ b/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/Model/DeviceStates.cs
@@ -3,10 +3,7 @@
 // Licensed under the GPLv3 license. See LICENSE file in the project root for full license information.
 // </copyright>
 
-using System;
 using System.ComponentModel.DataAnnotations;
-using System.Net;
-using System.Net.NetworkInformation;
 using GeothermalResearchInstitute.v1;
 
 namespace GeothermalResearchInstitute.ServerConsole.Model
diff --git a/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/Program.cs b/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/Program.cs
index 093fe33a..5df1569a 100644
--- a/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/Program.cs
+++ b/GeothermalResearchInstitute/GeothermalResearchInstitute.ServerConsole/Program.cs
@@ -3,11 +3,12 @@
 // Licensed under the GPLv3 license. See LICENSE file in the project root for full license information.
 // </copyright>
 
-using System.Net.NetworkInformation;
+using System;
 using GeothermalResearchInstitute.ServerConsole.GrpcService;
 using GeothermalResearchInstitute.ServerConsole.Model;
 using GeothermalResearchInstitute.v1;
 using Grpc.Core;
+using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
@@ -17,6 +18,9 @@ namespace GeothermalResearchInstitute.ServerConsole
 {
     internal class Program
     {
+        internal static readonly Action<DbContextOptionsBuilder> DbContextOptionsBuilderAction =
+            builder => builder.UseSqlite("Data Source=bjdire.sqlite");
+
         private static void Main(string[] args)
         {
             var host = new HostBuilder()
@@ -51,20 +55,19 @@ private static void Main(string[] args)
 
                     if (env.IsDevelopment())
                     {
-                        // TODO(zhangshuai.ds): Add fake clients.
+                        // TODO(zhangshuai.ds): Add fake data.
+                        builder.AddDbContext<BjdireContext>(options => options.UseInMemoryDatabase("bjdire"));
                     }
                     else
                     {
-                        // TODO(zhangshuai.ds): Add real clients.
+                        // Database.
+                        builder.AddDbContext<BjdireContext>(DbContextOptionsBuilderAction);
                     }
 
                     // Configuration options.
                     builder.Configure<AuthenticationOptions>(context.Configuration);
                     builder.Configure<DeviceOptions>(context.Configuration);
 
-                    // Database.
-                    builder.AddDbContext<BjdireContext>();
-
                     // Grpc services.
                     builder.AddSingleton(serviceProvider =>
                     {