diff --git a/devicetypes/smartthings/zigbee-dimmer.src/zigbee-dimmer.groovy b/devicetypes/smartthings/zigbee-dimmer.src/zigbee-dimmer.groovy
index 72809f5..f23c78c 100644
--- a/devicetypes/smartthings/zigbee-dimmer.src/zigbee-dimmer.groovy
+++ b/devicetypes/smartthings/zigbee-dimmer.src/zigbee-dimmer.groovy
@@ -19,6 +19,7 @@ metadata {
         capability "Refresh"
         capability "Switch"
         capability "Switch Level"
+        capability "Health Check"
 
 
         fingerprint profileId: "0104", inClusters: "0000, 0003, 0004, 0005, 0006, 0008"
@@ -54,6 +55,12 @@ def parse(String description) {
     def event = zigbee.getEvent(description)
     if (event) {
         sendEvent(event)
+        // Temporary fix for the case when Device is OFFLINE and is connected again
+        if (state.lastActivity == null){
+            state.lastActivity = now()
+            sendEvent(name: "deviceWatch-lastActivity", value: state.lastActivity, description: "Last Activity is on ${new Date((long)state.lastActivity)}", displayed: false, isStateChange: true)
+        }
+        state.lastActivity = now()
     }
     else {
         log.warn "DID NOT PARSE MESSAGE for description : $description"
@@ -72,6 +79,20 @@ def on() {
 def setLevel(value) {
     zigbee.setLevel(value)
 }
+/**
+ * PING is used by Device-Watch in attempt to reach the Device
+ * */
+def ping() {
+
+    if (state.lastActivity < (now() - (1000 * device.currentValue("checkInterval"))) ){
+        log.info "ping, alive=no, lastActivity=${state.lastActivity}"
+        state.lastActivity = null
+        return zigbee.onOffRefresh()
+    } else {
+        log.info "ping, alive=yes, lastActivity=${state.lastActivity}"
+        sendEvent(name: "deviceWatch-lastActivity", value: state.lastActivity, description: "Last Activity is on ${new Date((long)state.lastActivity)}", displayed: false, isStateChange: true)
+    }
+}
 
 def refresh() {
     zigbee.onOffRefresh() + zigbee.levelRefresh() + zigbee.onOffConfig() + zigbee.levelConfig()
@@ -79,5 +100,7 @@ def refresh() {
 
 def configure() {
     log.debug "Configuring Reporting and Bindings."
+    // Enrolls device to Device-Watch with 3 x Reporting interval 30min
+    sendEvent(name: "checkInterval", value: 1800, displayed: false, data: [protocol: "zigbee"])
     zigbee.onOffConfig() + zigbee.levelConfig() + zigbee.onOffRefresh() + zigbee.levelRefresh()
 }
diff --git a/devicetypes/smartthings/zigbee-rgbw-bulb.src/zigbee-rgbw-bulb.groovy b/devicetypes/smartthings/zigbee-rgbw-bulb.src/zigbee-rgbw-bulb.groovy
index ade4987..31fc7b0 100644
--- a/devicetypes/smartthings/zigbee-rgbw-bulb.src/zigbee-rgbw-bulb.groovy
+++ b/devicetypes/smartthings/zigbee-rgbw-bulb.src/zigbee-rgbw-bulb.groovy
@@ -27,6 +27,7 @@ metadata {
         capability "Refresh"
         capability "Switch"
         capability "Switch Level"
+        capability "Health Check"
 
         fingerprint profileId: "0104", inClusters: "0000,0003,0004,0005,0006,0008,0300,0B04,FC0F", outClusters: "0019", manufacturer: "OSRAM", model: "LIGHTIFY Flex RGBW", deviceJoinName: "OSRAM LIGHTIFY LED FLEXIBLE STRIP RGBW"
         fingerprint profileId: "0104", inClusters: "0000,0003,0004,0005,0006,0008,0300,0B04,FC0F", outClusters: "0019", manufacturer: "OSRAM", model: "Flex RGBW", deviceJoinName: "OSRAM LIGHTIFY LED FLEXIBLE STRIP RGBW"
@@ -82,6 +83,12 @@ def parse(String description) {
     if (finalResult) {
         log.debug finalResult
         sendEvent(finalResult)
+        // Temporary fix for the case when Device is OFFLINE and is connected again
+        if (state.lastActivity == null){
+            state.lastActivity = now()
+            sendEvent(name: "deviceWatch-lastActivity", value: state.lastActivity, description: "Last Activity is on ${new Date((long)state.lastActivity)}", displayed: false, isStateChange: true)
+        }
+        state.lastActivity = now()
     }
     else {
         def zigbeeMap = zigbee.parseDescriptionAsMap(description)
@@ -110,13 +117,29 @@ def on() {
 def off() {
     zigbee.off()
 }
+/**
+ * PING is used by Device-Watch in attempt to reach the Device
+ * */
+def ping() {
+
+    if (state.lastActivity < (now() - (1000 * device.currentValue("checkInterval"))) ){
+        log.info "ping, alive=no, lastActivity=${state.lastActivity}"
+        state.lastActivity = null
+        return zigbee.onOffRefresh()
+    } else {
+        log.info "ping, alive=yes, lastActivity=${state.lastActivity}"
+        sendEvent(name: "deviceWatch-lastActivity", value: state.lastActivity, description: "Last Activity is on ${new Date((long)state.lastActivity)}", displayed: false, isStateChange: true)
+    }
+}
 
 def refresh() {
-    zigbee.readAttribute(0x0006, 0x00) + zigbee.readAttribute(0x0008, 0x00) + zigbee.readAttribute(0x0300, 0x00) + zigbee.readAttribute(0x0300, ATTRIBUTE_COLOR_TEMPERATURE) + zigbee.readAttribute(0x0300, ATTRIBUTE_HUE) + zigbee.readAttribute(0x0300, ATTRIBUTE_SATURATION) + zigbee.onOffConfig() + zigbee.levelConfig() + zigbee.colorTemperatureConfig() + zigbee.configureReporting(COLOR_CONTROL_CLUSTER, ATTRIBUTE_HUE, 0x20, 1, 3600, 0x01) + zigbee.configureReporting(COLOR_CONTROL_CLUSTER, ATTRIBUTE_SATURATION, 0x20, 1, 3600, 0x01)
+    zigbee.onOffRefresh() + zigbee.readAttribute(0x0008, 0x00) + zigbee.readAttribute(0x0300, 0x00) + zigbee.readAttribute(0x0300, ATTRIBUTE_COLOR_TEMPERATURE) + zigbee.readAttribute(0x0300, ATTRIBUTE_HUE) + zigbee.readAttribute(0x0300, ATTRIBUTE_SATURATION) + zigbee.onOffConfig() + zigbee.levelConfig() + zigbee.colorTemperatureConfig() + zigbee.configureReporting(COLOR_CONTROL_CLUSTER, ATTRIBUTE_HUE, 0x20, 1, 3600, 0x01) + zigbee.configureReporting(COLOR_CONTROL_CLUSTER, ATTRIBUTE_SATURATION, 0x20, 1, 3600, 0x01)
 }
 
 def configure() {
     log.debug "Configuring Reporting and Bindings."
+    // Enrolls device to Device-Watch with 3 x Reporting interval 30min
+    sendEvent(name: "checkInterval", value: 1800, displayed: false, data: [protocol: "zigbee"])
     zigbee.onOffConfig() + zigbee.levelConfig() + zigbee.colorTemperatureConfig() + zigbee.configureReporting(COLOR_CONTROL_CLUSTER, ATTRIBUTE_HUE, 0x20, 1, 3600, 0x01) + zigbee.configureReporting(COLOR_CONTROL_CLUSTER, ATTRIBUTE_SATURATION, 0x20, 1, 3600, 0x01) + zigbee.readAttribute(0x0006, 0x00) + zigbee.readAttribute(0x0008, 0x00) + zigbee.readAttribute(COLOR_CONTROL_CLUSTER, 0x00) + zigbee.readAttribute(COLOR_CONTROL_CLUSTER, ATTRIBUTE_COLOR_TEMPERATURE) + zigbee.readAttribute(COLOR_CONTROL_CLUSTER, ATTRIBUTE_HUE) + zigbee.readAttribute(COLOR_CONTROL_CLUSTER, ATTRIBUTE_SATURATION)
 }