diff --git a/numass-control/vac/src/main/java/inr/numass/readvac/app/ReadVac.java b/numass-control/vac/src/main/java/inr/numass/readvac/app/ReadVac.java
new file mode 100644
index 00000000..d51ecb36
--- /dev/null
+++ b/numass-control/vac/src/main/java/inr/numass/readvac/app/ReadVac.java
@@ -0,0 +1,76 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package inr.numass.readvac.app;
+
+import hep.dataforge.control.measurements.Sensor;
+import inr.numass.readvac.devices.CM32Device;
+import inr.numass.readvac.devices.MKSBaratronDevice;
+import inr.numass.readvac.devices.MKSVacDevice;
+import inr.numass.readvac.devices.VITVacDevice;
+import inr.numass.readvac.devices.VacCollectorDevice;
+import inr.numass.readvac.fx.VacCollectorController;
+import javafx.application.Application;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Scene;
+import javafx.stage.Stage;
+
+/**
+ *
+ * @author Alexander Nozik
+ */
+public class ReadVac extends Application {
+
+    VacCollectorController controller;
+
+    @Override
+    public void start(Stage primaryStage) throws Exception {
+        Sensor<Double> p1 = new MKSVacDevice("com::/dev/ttyUSB0");
+        p1.setName("P1");
+        p1.getConfig().putValue("powerButton", true);
+        Sensor<Double> p2 = new CM32Device("tcp::192.168.111.32:4002");
+        p2.setName("P2");
+        Sensor<Double> p3 = new CM32Device("tcp::192.168.111.32:4003");
+        p3.setName("P3");
+        Sensor<Double> px = new VITVacDevice("com::/dev/ttyUSB1");
+        px.setName("Px");
+        Sensor<Double> baratron = new MKSBaratronDevice("tcp::192.168.111.33:4004");
+        baratron.setName("Baratron");
+
+        VacCollectorDevice collector = new VacCollectorDevice();
+        collector.setSensors(p1, p2, p3, px, baratron);
+//            collector.setSensors(baratron);
+        collector.init();
+
+        FXMLLoader loader = new FXMLLoader(getClass().getResource("/fxml/VacCollector.fxml"));
+        loader.load();
+        controller = loader.getController();
+        controller.setDevice(collector);
+
+        Scene scene = new Scene(loader.getRoot(), 800, 600);
+
+        primaryStage.setTitle("Numass vacuum measurements");
+        primaryStage.setScene(scene);
+        primaryStage.show();
+        controller.startMeasurement();
+    }
+
+    @Override
+    public void stop() throws Exception {
+        if (controller != null) {
+            controller.stopMeasurement();
+            controller.getDevice().shutdown();
+        }
+        super.stop();
+    }
+
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args) {
+        launch(args);
+    }
+
+}
diff --git a/numass-control/vac/src/main/java/inr/numass/readvac/devices/CM32Device.java b/numass-control/vac/src/main/java/inr/numass/readvac/devices/CM32Device.java
index 72aa09c4..e48fa372 100644
--- a/numass-control/vac/src/main/java/inr/numass/readvac/devices/CM32Device.java
+++ b/numass-control/vac/src/main/java/inr/numass/readvac/devices/CM32Device.java
@@ -20,30 +20,18 @@ import hep.dataforge.exceptions.ControlException;
 @ValueDef(name = "port")
 @ValueDef(name = "delay")
 @ValueDef(name = "timeout")
-public class CM32Device extends Sensor<Double> {
+public class CM32Device extends NumassVacDevice {
 
-    private PortHandler handler;
-
-//    public CM32Device(String name, Context context, Meta meta) {
-//        super(name, context, meta);
-//    }
-
-    public void setHandler(PortHandler handler){
-        this.handler = handler;
+    public CM32Device(String portName) {
+        super(portName);
     }
-    
-    /**
-     * @return the handler
-     */
-    private PortHandler getHandler() throws ControlException {
-        if (handler == null || !handler.isOpen()) {
-            String port = meta().getString("port");
-            getLogger().info("Connecting to port {}", port);
-            handler = new ComPortHandler(port, 2400, 8, 1, 0);
-            handler.setDelimeter("T--");
-            handler.open();
-        }
-        return handler;
+
+    @Override
+    protected PortHandler buildHandler(String portName) throws ControlException {
+        String port = meta().getString("port", portName);
+        PortHandler newHandler = new ComPortHandler(port, 2400, 8, 1, 0);
+        newHandler.setDelimeter("T--");
+        return newHandler;
     }
 
     @Override
@@ -75,14 +63,7 @@ public class CM32Device extends Sensor<Double> {
 //        }
     }
 
-    public boolean isConnected() {
-        return getState("connection").booleanValue();
-    }
 
-    private int timeout() {
-        return meta().getInt("timeout", 400);
-    }
-    
     private class CMVacMeasurement extends SimpleMeasurement<Double> {
 
         private static final String CM32_QUERY = "MES R PM 1\r\n";
@@ -90,7 +71,7 @@ public class CM32Device extends Sensor<Double> {
         @Override
         protected synchronized Double doMeasure() throws Exception {
 
-            String answer = handler.sendAndWait(CM32_QUERY, timeout());
+            String answer = getHandler().sendAndWait(CM32_QUERY, timeout());
 
             if (answer.isEmpty()) {
                 this.onProgressUpdate("No signal");
diff --git a/numass-control/vac/src/main/java/inr/numass/readvac/devices/MKSBaratronDevice.java b/numass-control/vac/src/main/java/inr/numass/readvac/devices/MKSBaratronDevice.java
index 43c8e6e8..861d93a6 100644
--- a/numass-control/vac/src/main/java/inr/numass/readvac/devices/MKSBaratronDevice.java
+++ b/numass-control/vac/src/main/java/inr/numass/readvac/devices/MKSBaratronDevice.java
@@ -24,16 +24,14 @@ import java.util.regex.Pattern;
 @ValueDef(name = "port")
 @ValueDef(name = "delay")
 @ValueDef(name = "timeout")
-public class MKSBaratronDevice extends Sensor<Double> {
+public class MKSBaratronDevice extends NumassVacDevice {
 
-    private PortHandler handler;
-
-    public void setHandler(PortHandler handler) {
-        this.handler = handler;
+    public MKSBaratronDevice(String portName) {
+        super(portName);
     }
 
     private String talk(String request) throws ControlException {
-        String answer = getHandler().sendAndWait(String.format("@%s%s\r", getDeviceAddress(), request), timeout());
+        String answer = getHandler().sendAndWait(String.format("%s\r", request), timeout());
 
         Matcher match = Pattern.compile("(.*)\r").matcher(answer);
         if (match.matches()) {
@@ -43,45 +41,23 @@ public class MKSBaratronDevice extends Sensor<Double> {
         }
     }
 
-    private String getDeviceAddress() {
-        //PENDING cache this?
-        return meta().getString("address", "253");
-    }
-
-    private int timeout() {
-        return meta().getInt("timeout", 400);
-    }
-
     @Override
     protected Measurement<Double> createMeasurement() {
         return new BaratronMeasurement();
     }
 
-
-    public boolean isConnected() {
-        return getState("connection").booleanValue();
-    }
-
     @Override
     public String type() {
         return meta().getString("type", "MKS baratron");
     }
 
-    /**
-     * @return the handler
-     */
-    private PortHandler getHandler() throws ControlException {
-        if (handler == null || !handler.isOpen()) {
-            String port = meta().getString("port");
-            getLogger().info("Connecting to port {}", port);
-//            handler = PortFactory.buildPort(port);
-            handler = new ComPortHandler(port);
-            handler.setDelimeter("\r");
-            handler.open();
-        }
+    @Override
+    protected PortHandler buildHandler(String portName) throws ControlException {
+        PortHandler handler = super.buildHandler(portName);
+        handler.setDelimeter("\r");
         return handler;
     }
-
+    
     private int getChannel() {
         return meta().getInt("channel", 2);
     }
diff --git a/numass-control/vac/src/main/java/inr/numass/readvac/devices/MKSVacDevice.java b/numass-control/vac/src/main/java/inr/numass/readvac/devices/MKSVacDevice.java
index 49041c74..74bc3cc2 100644
--- a/numass-control/vac/src/main/java/inr/numass/readvac/devices/MKSVacDevice.java
+++ b/numass-control/vac/src/main/java/inr/numass/readvac/devices/MKSVacDevice.java
@@ -6,7 +6,6 @@
 package inr.numass.readvac.devices;
 
 import hep.dataforge.control.measurements.Measurement;
-import hep.dataforge.control.measurements.Sensor;
 import hep.dataforge.control.measurements.SimpleMeasurement;
 import hep.dataforge.control.ports.ComPortHandler;
 import hep.dataforge.control.ports.PortHandler;
@@ -27,12 +26,10 @@ import javafx.beans.property.adapter.JavaBeanBooleanPropertyBuilder;
 @ValueDef(name = "port")
 @ValueDef(name = "delay")
 @ValueDef(name = "timeout")
-public class MKSVacDevice extends Sensor<Double> {
+public class MKSVacDevice extends NumassVacDevice {
 
-    private PortHandler handler;
-
-    public void setHandler(PortHandler handler) {
-        this.handler = handler;
+    public MKSVacDevice(String portName) {
+        super(portName);
     }
 
     private String talk(String requestContent) throws ControlException {
@@ -46,15 +43,18 @@ public class MKSVacDevice extends Sensor<Double> {
         }
     }
 
+    @Override
+    protected PortHandler buildHandler(String portName) throws ControlException {
+        PortHandler handler = super.buildHandler(portName);
+        handler.setDelimeter(";FF");
+        return handler;
+    }
+
     private String getDeviceAddress() {
         //PENDING cache this?
         return meta().getString("address", "253");
     }
 
-    private int timeout() {
-        return meta().getInt("timeout", 400);
-    }
-
     @Override
     protected Measurement<Double> createMeasurement() {
         return new MKSVacMeasurement();
@@ -89,28 +89,6 @@ public class MKSVacDevice extends Sensor<Double> {
         }
     }
 
-//    private Double readPressure(int channel) {
-//        try {
-//            String answer = talk("PR" + channel + "?");
-//            if (answer == null || answer.isEmpty()) {
-//                invalidateState("connection");
-//                return null;
-//            }
-//            double res = Double.parseDouble(answer);
-//            if (res <= 0) {
-//                return null;
-//            } else {
-//                return res;
-//            }
-//        } catch (ControlException ex) {
-//            invalidateState("connection");
-//            return null;
-//        }
-//    }
-    public boolean isConnected() {
-        return getState("connection").booleanValue();
-    }
-
     public boolean isPowerOn() {
         return getState("power").booleanValue();
     }
@@ -153,21 +131,6 @@ public class MKSVacDevice extends Sensor<Double> {
         return meta().getString("type", "MKS vacuumeter");
     }
 
-    /**
-     * @return the handler
-     */
-    private PortHandler getHandler() throws ControlException {
-        if (handler == null || !handler.isOpen()) {
-            String port = meta().getString("port");
-            getLogger().info("Connecting to port {}", port);
-//            handler = PortFactory.buildPort(port);
-            handler = new ComPortHandler(port);
-            handler.setDelimeter(";FF");
-            handler.open();
-        }
-        return handler;
-    }
-
     private int getChannel() {
         return meta().getInt("channel", 5);
     }
diff --git a/numass-control/vac/src/main/java/inr/numass/readvac/devices/NumassVacDevice.java b/numass-control/vac/src/main/java/inr/numass/readvac/devices/NumassVacDevice.java
new file mode 100644
index 00000000..3461f094
--- /dev/null
+++ b/numass-control/vac/src/main/java/inr/numass/readvac/devices/NumassVacDevice.java
@@ -0,0 +1,71 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package inr.numass.readvac.devices;
+
+import hep.dataforge.control.measurements.Sensor;
+import hep.dataforge.control.ports.PortFactory;
+import hep.dataforge.control.ports.PortHandler;
+import hep.dataforge.exceptions.ControlException;
+
+/**
+ *
+ * @author darksnake
+ */
+public abstract class NumassVacDevice extends Sensor<Double> {
+
+    private PortHandler handler;
+    private final String portName;
+
+    public NumassVacDevice(String portName) {
+        this.portName = portName;
+    }
+    
+
+    protected final void setHandler(PortHandler handler) {
+        this.handler = handler;
+    }
+
+    public boolean isConnected() {
+        return getState("connection").booleanValue();
+    }
+
+    protected int timeout() {
+        return meta().getInt("timeout", 400);
+    }
+
+    protected PortHandler buildHandler(String portName) throws ControlException {
+        getLogger().info("Connecting to port {}", portName);
+        return PortFactory.buildPort(portName);
+    }
+
+    @Override
+    public void shutdown() throws ControlException {
+        super.shutdown();
+        try {
+            handler.close();
+        } catch (Exception ex) {
+            throw new ControlException(ex);
+        }
+    }
+
+    /**
+     * @return the handler
+     * @throws hep.dataforge.exceptions.ControlException
+     */
+    protected PortHandler getHandler() throws ControlException {
+        if (handler == null) {
+            String port = meta().getString("port", portName);
+            this.handler = buildHandler(port);
+        }
+
+        if (!handler.isOpen()) {
+            handler.open();
+        }
+
+        return handler;
+    }
+
+}
diff --git a/numass-control/vac/src/main/java/inr/numass/readvac/devices/VITVacDevice.java b/numass-control/vac/src/main/java/inr/numass/readvac/devices/VITVacDevice.java
index f961669a..74dfb17d 100644
--- a/numass-control/vac/src/main/java/inr/numass/readvac/devices/VITVacDevice.java
+++ b/numass-control/vac/src/main/java/inr/numass/readvac/devices/VITVacDevice.java
@@ -24,30 +24,17 @@ import java.util.regex.Pattern;
 @ValueDef(name = "port")
 @ValueDef(name = "delay")
 @ValueDef(name = "timeout")
-public class VITVacDevice extends Sensor<Double> {
+public class VITVacDevice extends NumassVacDevice {
 
-    private PortHandler handler;
-
-//    public VITVacDevice(String name, Context context, Meta meta) {
-//        super(name, context, meta);
-//    }
-
-    public void setHandler(PortHandler handler) {
-        this.handler = handler;
+    public VITVacDevice(String portName) {
+        super(portName);
     }
 
-    /**
-     * @return the handler
-     */
-    private PortHandler getHandler() throws ControlException {
-        if (handler == null || !handler.isOpen()) {
-            String port = meta().getString("port");
-            getLogger().info("Connecting to port {}", port);
-            handler = new ComPortHandler(port, 2400, 8, 1, 0);
-            handler.setDelimeter("\r\n");
-            handler.open();
-        }
-        return handler;
+    @Override
+    protected PortHandler buildHandler(String portName) throws ControlException {
+        PortHandler  newHandler = super.buildHandler(portName);
+        newHandler.setDelimeter("\r\n");
+        return newHandler;
     }
 
     @Override
@@ -79,13 +66,6 @@ public class VITVacDevice extends Sensor<Double> {
 //        }
     }
 
-    public boolean isConnected() {
-        return getState("connection").booleanValue();
-    }
-
-    private int timeout() {
-        return meta().getInt("timeout", 400);
-    }
 
     private class CMVacMeasurement extends SimpleMeasurement<Double> {
 
@@ -94,7 +74,7 @@ public class VITVacDevice extends Sensor<Double> {
         @Override
         protected synchronized Double doMeasure() throws Exception {
 
-            String answer = handler.sendAndWait(VIT_QUERY, timeout());
+            String answer = getHandler().sendAndWait(VIT_QUERY, timeout());
 
             if (answer.isEmpty()) {
                 this.onProgressUpdate("No signal");
diff --git a/numass-control/vac/src/main/java/inr/numass/readvac/fx/VacCollectorController.java b/numass-control/vac/src/main/java/inr/numass/readvac/fx/VacCollectorController.java
index 1fa4669a..7af7333d 100644
--- a/numass-control/vac/src/main/java/inr/numass/readvac/fx/VacCollectorController.java
+++ b/numass-control/vac/src/main/java/inr/numass/readvac/fx/VacCollectorController.java
@@ -145,7 +145,7 @@ public class VacCollectorController implements Initializable, DeviceListener, Me
         this.device = device;
         device.getSensors().stream().map((sensor) -> {
             VacuumeterView controller;
-            if (sensor.hasState("power")) {
+            if (sensor.meta().getBoolean("powerButton", false)) {
                 controller = new PoweredVacuumeterView();
             } else {
                 controller = new VacuumeterView();