diff --git a/devicetypes/smartthings/zigbee-lock.src/zigbee-lock.groovy b/devicetypes/smartthings/zigbee-lock.src/zigbee-lock.groovy
index 437e18f..12eb957 100644
--- a/devicetypes/smartthings/zigbee-lock.src/zigbee-lock.groovy
+++ b/devicetypes/smartthings/zigbee-lock.src/zigbee-lock.groovy
@@ -24,6 +24,7 @@ import physicalgraph.zigbee.zcl.DataType
         capability "Sensor"
         capability "Battery"
         capability "Configuration"
+        capability "Health Check"
 
         fingerprint profileId: "0104", inClusters: "0000,0001,0003,0004,0005,0009,0020,0101,0402,0B05,FDBD", outClusters: "000A,0019", manufacturer: "Kwikset", model: "SMARTCODE_DEADBOLT_5", deviceJoinName: "Kwikset 5-Button Deadbolt"
         fingerprint profileId: "0104", inClusters: "0000,0001,0003,0004,0005,0009,0020,0101,0402,0B05,FDBD", outClusters: "000A,0019", manufacturer: "Kwikset", model: "SMARTCODE_LEVER_5", deviceJoinName: "Kwikset 5-Button Lever"
@@ -33,17 +34,17 @@ import physicalgraph.zigbee.zcl.DataType
         fingerprint profileId: "0104", inClusters: "0000,0001,0003,0009,000A,0101,0020", outClusters: "000A,0019", manufacturer: "Yale", model: "YRD210 PB DB", deviceJoinName: "Yale Push Button Deadbolt Lock"
         fingerprint profileId: "0104", inClusters: "0000,0001,0003,0009,000A,0101,0020", outClusters: "000A,0019", manufacturer: "Yale", model: "YRD220/240 TSDB", deviceJoinName: "Yale Touch Screen Deadbolt Lock"
         fingerprint profileId: "0104", inClusters: "0000,0001,0003,0009,000A,0101,0020", outClusters: "000A,0019", manufacturer: "Yale", model: "YRL210 PB LL", deviceJoinName: "Yale Push Button Lever Lock"
-    	fingerprint profileId: "0104", inClusters: "0000,0001,0003,0009,000A,0101,0020", outClusters: "000A,0019", manufacturer: "Yale", model: "YRD226/246 TSDB", deviceJoinName: "Yale Touch Screen Deadbolt Lock"
-        fingerprint profileId: "0104", inClusters: "0000,0001,0003,0009,0020,0101,0B05", outClusters: "000A, 0019, 0B05", manufacturer: "Danalock", model: "V3-BTZB",deviceJoinName: "Danalock V3-BTZB"
+	fingerprint profileId: "0104", inClusters: "0000,0001,0003,0009,000A,0101,0020", outClusters: "000A,0019", manufacturer: "Yale", model: "YRD226/246 TSDB", deviceJoinName: "Yale Touch Screen Deadbolt Lock"
+         fingerprint profileId: "0104", inClusters: "0000,0001,0003,0009,0020,0101,0B05", outClusters: "000A, 0019, 0B05", manufacturer: "Danalock", model: "V3-BTZB",deviceJoinName: "Danalock V3-BTZB"
 	}
 
     tiles(scale: 2) {
 		multiAttributeTile(name:"toggle", type:"generic", width:6, height:4){
 			tileAttribute ("device.lock", key:"PRIMARY_CONTROL") {
-				attributeState "locked", label:'locked', action:"lock.unlock", icon:"st.locks.lock.locked", backgroundColor:"#79b821", nextState:"unlocking"
+				attributeState "locked", label:'locked', action:"lock.unlock", icon:"st.locks.lock.locked", backgroundColor:"#00A0DC", nextState:"unlocking"
 				attributeState "unlocked", label:'unlocked', action:"lock.lock", icon:"st.locks.lock.unlocked", backgroundColor:"#ffffff", nextState:"locking"
 				attributeState "unknown", label:"unknown", action:"lock.lock", icon:"st.locks.lock.unknown", backgroundColor:"#ffffff", nextState:"locking"
-				attributeState "locking", label:'locking', icon:"st.locks.lock.locked", backgroundColor:"#79b821"
+				attributeState "locking", label:'locking', icon:"st.locks.lock.locked", backgroundColor:"#00A0DC"
 				attributeState "unlocking", label:'unlocking', icon:"st.locks.lock.unlocked", backgroundColor:"#ffffff"
 			}
 		}
@@ -84,6 +85,9 @@ def uninstalled() {
 }
 
 def configure() {
+    // Device-Watch allows 2 check-in misses from device + ping (plus 2 min lag time)
+    sendEvent(name: "checkInterval", value: 2 * 60 * 60 + 2 * 60, displayed: false, data: [protocol: "zigbee", hubHardwareId: device.hub.hardwareID])
+
     def cmds =
         zigbee.configureReporting(CLUSTER_DOORLOCK, DOORLOCK_ATTR_LOCKSTATE,
                                   DataType.ENUM8, 0, 3600, null) +
@@ -93,6 +97,13 @@ def configure() {
     return refresh() + cmds // send refresh cmds as part of config
 }
 
+/**
+ * PING is used by Device-Watch in attempt to reach the Device
+ * */
+def ping() {
+    zigbee.readAttribute(CLUSTER_DOORLOCK, DOORLOCK_ATTR_LOCKSTATE)
+}
+
 def refresh() {
     def cmds =
         zigbee.readAttribute(CLUSTER_DOORLOCK, DOORLOCK_ATTR_LOCKSTATE) +
@@ -160,4 +171,4 @@ private Map parseReportAttributeMessage(String description) {
         log.debug "parseReportAttributeMessage() --- ignoring attribute"
     }
     return resultMap
-}
+}
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