diff --git a/bundles/org.openhab.binding.phc/src/main/java/org/openhab/binding/phc/internal/handler/PHCBridgeHandler.java b/bundles/org.openhab.binding.phc/src/main/java/org/openhab/binding/phc/internal/handler/PHCBridgeHandler.java
index d4c0ceb14ee68..d6b16f855964c 100644
--- a/bundles/org.openhab.binding.phc/src/main/java/org/openhab/binding/phc/internal/handler/PHCBridgeHandler.java
+++ b/bundles/org.openhab.binding.phc/src/main/java/org/openhab/binding/phc/internal/handler/PHCBridgeHandler.java
@@ -210,7 +210,9 @@ private void processReceivedBytes() {
                 byte sizeToggle = buffer.get();
 
                 // read length of command and check if makes sense
-                if ((sizeToggle < 1 || sizeToggle > 3) && ((sizeToggle & 0xFF) < 0x81 || (sizeToggle & 0xFF) > 0x83)) {
+                int size = (sizeToggle & 0x7F);
+
+                if (!isSizeToggleValid(sizeToggle, module)) {
                     if (logger.isDebugEnabled()) {
                         logger.debug("get invalid sizeToggle: {}", new String(HexUtils.byteToHex(sizeToggle)));
                     }
@@ -220,7 +222,6 @@ private void processReceivedBytes() {
                 }
 
                 // read toggle, size and command
-                int size = (sizeToggle & 0x7F);
                 boolean toggle = (sizeToggle & 0x80) == 0x80;
 
                 logger.debug("get toggle: {}", toggle);
@@ -270,6 +271,24 @@ private void processReceivedBytes() {
         }
     }
 
+    private boolean isSizeToggleValid(byte sizeToggle, byte module) {
+        int unsigned = sizeToggle & 0xFF;
+
+        if (unsigned > 0 && unsigned < 4) {
+            return true;
+        } else if (unsigned > 0x80 && unsigned < 0x84) {
+            return true;
+        } else if ((module & 0xE0) == 0x00) {
+            if (unsigned > 0 && unsigned < 16) {
+                return true;
+            } else if (unsigned > 0x80 && unsigned < 0x90) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
     private int handleCrcFault(int faultCounter) throws InterruptedException {
         if (faultCounter > 0) {
             // Normally in this case we read the message repeatedly offset to the real -> skip one to 6 bytes
@@ -320,23 +339,31 @@ private void processReceivedMsg(byte module, boolean toggle, byte[] command) {
 
             // EM command / update
         } else {
-            if (((module & 0xE0) == 0x00)) {
+            if ((module & 0xE0) == 0x00) {
                 sendEmAcknowledge(module, toggle);
                 logger.debug("send acknowledge (modul, toggle) {} {}", module, toggle);
 
-                byte channel = (byte) ((command[0] >>> 4) & 0x0F);
+                for (byte cmdByte : command) {
+                    byte channel = (byte) ((cmdByte >>> 4) & 0x0F);
 
-                OnOffType onOff = OnOffType.OFF;
+                    OnOffType onOff = OnOffType.OFF;
 
-                if ((command[0] & 0x0F) == 2) {
-                    onOff = OnOffType.ON;
-                }
+                    byte cmd = (byte) (cmdByte & 0x0F);
+                    if (cmd % 2 == 0) {
+                        if (cmd == 2) {
+                            onOff = OnOffType.ON;
+                        } else {
+                            logger.debug("Command {} isn't implemented for EM", cmd);
+                            continue;
+                        }
+                    }
 
-                QueueObject qo = new QueueObject(PHCBindingConstants.CHANNELS_EM, module, channel, onOff);
+                    QueueObject qo = new QueueObject(PHCBindingConstants.CHANNELS_EM, module, channel, onOff);
 
-                // put recognized message into queue
-                if (!receiveQueue.contains(qo)) {
-                    receiveQueue.offer(qo);
+                    // put recognized message into queue
+                    if (!receiveQueue.contains(qo)) {
+                        receiveQueue.offer(qo);
+                    }
                 }
 
                 // ignore if message not from EM module
diff --git a/bundles/org.openhab.binding.phc/src/main/resources/OH-INF/thing/channel-types.xml b/bundles/org.openhab.binding.phc/src/main/resources/OH-INF/thing/channel-types.xml
index b3659783b3382..6c6cf128b6c74 100644
--- a/bundles/org.openhab.binding.phc/src/main/resources/OH-INF/thing/channel-types.xml
+++ b/bundles/org.openhab.binding.phc/src/main/resources/OH-INF/thing/channel-types.xml
@@ -53,7 +53,7 @@
 		</channels>
 	</channel-group-type>
 
-	<channel-group-type id="jrmTimeChannels" advanced="true">
+	<channel-group-type id="jrmTimeChannels">
 		<label>JRM time Channels</label>
 		<description>Time for shutter channels in seconds with an accuracy of 1/10 seconds.</description>
 		<channels>