diff --git a/numass-control/magnet/src/main/kotlin/inr/numass/control/magnet/LambdaHub.kt b/numass-control/magnet/src/main/kotlin/inr/numass/control/magnet/LambdaHub.kt
index 4c63010b..d6860251 100644
--- a/numass-control/magnet/src/main/kotlin/inr/numass/control/magnet/LambdaHub.kt
+++ b/numass-control/magnet/src/main/kotlin/inr/numass/control/magnet/LambdaHub.kt
@@ -58,5 +58,6 @@ class LambdaHub(context: Context, meta: Meta) : DeviceHub, AbstractDevice(contex
     override fun optDevice(name: Name): Optional<Device> =
             magnets.stream().filter { it.name == name.toUnescaped() }.map { it as Device }.findFirst()
 
-    override fun getDeviceNames(): Stream<Name> = magnets.stream().map { Name.ofSingle(it.name) }
+    override val deviceNames: Stream<Name>
+        get() = magnets.stream().map { Name.ofSingle(it.name) }
 }
\ No newline at end of file
diff --git a/numass-control/magnet/src/main/kotlin/inr/numass/control/magnet/fx/MagnetApp.kt b/numass-control/magnet/src/main/kotlin/inr/numass/control/magnet/fx/MagnetApp.kt
index 8c872aaf..c3600428 100644
--- a/numass-control/magnet/src/main/kotlin/inr/numass/control/magnet/fx/MagnetApp.kt
+++ b/numass-control/magnet/src/main/kotlin/inr/numass/control/magnet/fx/MagnetApp.kt
@@ -12,9 +12,7 @@ import javafx.stage.Stage
 class MagnetApp: NumassControlApplication<LambdaHub>() {
 
     override val deviceFactory: DeviceFactory = object :DeviceFactory{
-        override fun getType(): String {
-            return "numass.lambda"
-        }
+        override val type: String = "numass.lambda"
 
         override fun build(context: Context, meta: Meta): Device {
             return LambdaHub(context, meta)
diff --git a/numass-control/msp/src/main/kotlin/inr/numass/control/msp/MspDevice.kt b/numass-control/msp/src/main/kotlin/inr/numass/control/msp/MspDevice.kt
index 9ee8380f..18d8dffa 100644
--- a/numass-control/msp/src/main/kotlin/inr/numass/control/msp/MspDevice.kt
+++ b/numass-control/msp/src/main/kotlin/inr/numass/control/msp/MspDevice.kt
@@ -124,7 +124,8 @@ class MspDevice(context: Context, meta: Meta) : PortSensor(context, meta) {
 //        else -> super.computeState(stateName)
 //    }
 
-    override fun getType(): String = MSP_DEVICE_TYPE
+    override val type: String
+        get() = MSP_DEVICE_TYPE
 
     /**
      * Startup MSP: get available sensors, select sensor and control.
diff --git a/numass-control/src/main/kotlin/inr/numass/control/DeviceDisplayFX.kt b/numass-control/src/main/kotlin/inr/numass/control/DeviceDisplayFX.kt
index 589febb6..de604c63 100644
--- a/numass-control/src/main/kotlin/inr/numass/control/DeviceDisplayFX.kt
+++ b/numass-control/src/main/kotlin/inr/numass/control/DeviceDisplayFX.kt
@@ -136,9 +136,15 @@ abstract class DeviceDisplayFX<D : Device> : Component(), Connection, DeviceList
             alignment = Pos.CENTER_LEFT
             vgrow = Priority.ALWAYS;
             deviceStateIndicator(this@DeviceDisplayFX, Device.INITIALIZED_STATE)
-            deviceStateIndicator(this@DeviceDisplayFX, PortSensor.CONNECTED_STATE)
-            deviceStateIndicator(this@DeviceDisplayFX, Sensor.MEASURING_STATE)
-            deviceStateIndicator(this@DeviceDisplayFX, "storing")
+            if(device is PortSensor) {
+                deviceStateIndicator(this@DeviceDisplayFX, PortSensor.CONNECTED_STATE)
+            }
+            if(device is Sensor) {
+                deviceStateIndicator(this@DeviceDisplayFX, Sensor.MEASURING_STATE)
+            }
+            if(device.stateNames.contains("storing")) {
+                deviceStateIndicator(this@DeviceDisplayFX, "storing")
+            }
             pane {
                 hgrow = Priority.ALWAYS
             }
diff --git a/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/CM32Device.kt b/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/CM32Device.kt
index 303e3c83..958cfae8 100644
--- a/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/CM32Device.kt
+++ b/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/CM32Device.kt
@@ -52,8 +52,9 @@ class CM32Device(context: Context, meta: Meta) : PortSensor(context, meta) {
         }
     }
 
-    override fun getType(): String {
-        return meta.getString("type", "numass.vac.cm32")
-    }
+    override val type: String
+        get() {
+            return meta.getString("type", "numass.vac.cm32")
+        }
 
 }
diff --git a/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/MKSBaratronDevice.kt b/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/MKSBaratronDevice.kt
index e45454f6..d2de665a 100644
--- a/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/MKSBaratronDevice.kt
+++ b/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/MKSBaratronDevice.kt
@@ -27,9 +27,10 @@ class MKSBaratronDevice(context: Context, meta: Meta) : PortSensor(context, meta
 
     var channel by valueState("channel").intDelegate
 
-    override fun getType(): String {
-        return meta.getString("type", "numass.vac.baratron")
-    }
+    override val type: String
+        get() {
+            return meta.getString("type", "numass.vac.baratron")
+        }
 
     override fun connect(meta: Meta): GenericPortController {
         val port: Port = PortFactory.build(meta)
diff --git a/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/MKSVacDevice.kt b/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/MKSVacDevice.kt
index dc687f78..ae5750a2 100644
--- a/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/MKSVacDevice.kt
+++ b/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/MKSVacDevice.kt
@@ -97,7 +97,8 @@ class MKSVacDevice(context: Context, meta: Meta) : PortSensor(context, meta) {
         }
     }
 
-    override fun getType(): String = meta.getString("type", "numass.vac.mks")
+    override val type: String
+        get() = meta.getString("type", "numass.vac.mks")
 
     override fun startMeasurement(oldMeta: Meta?, newMeta: Meta) {
         measurement {
diff --git a/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/MeradatVacDevice.kt b/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/MeradatVacDevice.kt
index 011070e8..a73e9512 100644
--- a/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/MeradatVacDevice.kt
+++ b/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/MeradatVacDevice.kt
@@ -35,9 +35,10 @@ class MeradatVacDevice(context: Context, meta: Meta) : PortSensor(context, meta)
         return GenericPortController(context, port) { it.endsWith("\r\n") }
     }
 
-    override fun getType(): String {
-        return meta.getString("type", "numass.vac.vit")
-    }
+    override val type: String
+        get() {
+            return meta.getString("type", "numass.vac.vit")
+        }
 
     override fun startMeasurement(oldMeta: Meta?, newMeta: Meta) {
         measurement{
diff --git a/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/VacCollectorDevice.kt b/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/VacCollectorDevice.kt
index ef2ec2b9..03c62449 100644
--- a/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/VacCollectorDevice.kt
+++ b/numass-control/vac/src/main/kotlin/inr/numass/control/readvac/VacCollectorDevice.kt
@@ -75,7 +75,8 @@ class VacCollectorDevice(context: Context, meta: Meta, val sensors: Collection<S
         }
     }
 
-    override fun getType(): String = "numass.vac.collector"
+    override val type: String
+        get() = "numass.vac.collector"
 
 
     @Throws(ControlException::class)
diff --git a/numass-core/build.gradle b/numass-core/build.gradle
index dd25157c..402475ea 100644
--- a/numass-core/build.gradle
+++ b/numass-core/build.gradle
@@ -29,6 +29,10 @@ protobuf {
     generatedFilesBaseDir = "$projectDir/gen"
 }
 
+compileKotlin {
+    dependsOn(':numass-core:generateProto')
+}
+
 sourceSets {
     main.kotlin.srcDirs += 'gen/main/java'
 }
diff --git a/numass-web/src/main/kotlin/inr/numass/server/Interceptors.kt b/numass-web/src/main/kotlin/inr/numass/server/Interceptors.kt
index 51413e80..b78de839 100644
--- a/numass-web/src/main/kotlin/inr/numass/server/Interceptors.kt
+++ b/numass-web/src/main/kotlin/inr/numass/server/Interceptors.kt
@@ -95,7 +95,7 @@ val deviceInterceptor = InterceptorFactory { context, meta ->
                     val device = deviceManager.optDevice(name).get();
                     devices.add(jsonObject {
                         add("name", name.toUnescaped())
-                        add("type", device.getType())
+                        add("type", device.type)
                         add("getMeta", device.meta.asJson())
                     })
                 }