diff --git a/devicetypes/smartthings/arrival-sensor-ha.src/arrival-sensor-ha.groovy b/devicetypes/smartthings/arrival-sensor-ha.src/arrival-sensor-ha.groovy
index d2f1660..bda1d20 100644
--- a/devicetypes/smartthings/arrival-sensor-ha.src/arrival-sensor-ha.groovy
+++ b/devicetypes/smartthings/arrival-sensor-ha.src/arrival-sensor-ha.groovy
@@ -11,6 +11,17 @@
  *  for the specific language governing permissions and limitations under the License.
  *
  */
+ 
+ /*
+ *  Purpose: Arrival Sensor HA DTH File
+ *
+ *  Filename: Arrival-Sensor-HA.src/Arrival-Sensor-HA.groovy
+ *
+ *  Change History:
+ *  1. 20160115 TW - Update/Edit to support i18n translations
+ *  2. 20160121 TW - Update to V4 battery calcs, added pref's page title translations
+ */
+ 
 metadata {
     definition (name: "Arrival Sensor HA", namespace: "smartthings", author: "SmartThings") {
         capability "Tone"
@@ -32,7 +43,7 @@ metadata {
                 ])
         }
         section {
-            input "checkInterval", "enum", title: "Presence timeout (minutes)",
+            input "checkInterval", "enum", title: "Presence timeout (minutes)", description: "Tap to set",
                     defaultValue:"2", options: ["2", "3", "5"], displayDuringSetup: false
         }
     }
@@ -82,7 +93,6 @@ def parse(String description) {
 
 private handleReportAttributeMessage(String description) {
     def descMap = zigbee.parseDescriptionAsMap(description)
-
     if (descMap.clusterInt == 0x0001 && descMap.attrInt == 0x0020) {
         handleBatteryEvent(Integer.parseInt(descMap.value, 16))
     }
@@ -94,6 +104,7 @@ private handleReportAttributeMessage(String description) {
  * @param volts Battery voltage in .1V increments
  */
 private handleBatteryEvent(volts) {
+	def descriptionText
     if (volts == 0 || volts == 255) {
         log.debug "Ignoring invalid value for voltage (${volts/10}V)"
     }
@@ -107,15 +118,17 @@ private handleBatteryEvent(volts) {
             volts = minVolts
         else if (volts > maxVolts)
             volts = maxVolts
-        def pct = batteryMap[volts]
-        if (pct != null) {
+        def value = batteryMap[volts]
+        if (value != null) {
             def linkText = getLinkText(device)
+            descriptionText = '{{ linkText }} battery was {{ value }}'
             def eventMap = [
                 name: 'battery',
-                value: pct,
-                descriptionText: "${linkText} battery was ${pct}%"
+                value: value,
+                descriptionText: descriptionText,
+                translatable: true
             ]
-            log.debug "Creating battery event for voltage=${volts/10}V: ${eventMap}"
+            log.debug "Creating battery event for voltage=${volts/10}V: ${linkText} ${eventMap.name} is ${eventMap.value}%"
             sendEvent(eventMap)
         }
     }
@@ -131,13 +144,19 @@ private handlePresenceEvent(present) {
         stopTimer()
     }
     def linkText = getLinkText(device)
+    def descriptionText
+    if ( present )
+    	descriptionText = "{{ linkText }} has arrived"
+    else
+    	descriptionText = "{{ linkText }} has left"
     def eventMap = [
         name: "presence",
         value: present ? "present" : "not present",
         linkText: linkText,
-        descriptionText: "${linkText} has ${present ? 'arrived' : 'left'}",
+        descriptionText: descriptionText,
+        translatable: true
     ]
-    log.debug "Creating presence event: ${eventMap}"
+    log.debug "Creating presence event: ${device.displayName} ${eventMap.name} is ${eventMap.value}"
     sendEvent(eventMap)
 }
 
@@ -158,4 +177,4 @@ def checkPresenceCallback() {
     if (timeSinceLastCheckin >= theCheckInterval) {
         handlePresenceEvent(false)
     }
-}
+}
\ No newline at end of file
diff --git a/devicetypes/smartthings/arrival-sensor-ha.src/i18n/messages.properties b/devicetypes/smartthings/arrival-sensor-ha.src/i18n/messages.properties
new file mode 100644
index 0000000..0d4173c
--- /dev/null
+++ b/devicetypes/smartthings/arrival-sensor-ha.src/i18n/messages.properties
@@ -0,0 +1,35 @@
+#==============================================================================
+#  Copyright 2016 SmartThings
+#
+#  Licensed under the Apache License, Version 2.0 (the "License"); you may not 
+#  use this file except in compliance with the License. You may obtain a copy 
+#  of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software 
+#  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 
+#  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 
+#  License for the specific language governing permissions and limitations 
+#  under the License.
+#==============================================================================
+# Purpose: Arrival Sensor HA i18n Translation File
+#
+# Filename: Arrival-Sensor-HA.src/i18n/messages.properties
+#
+# Change History:
+#	1. 20160115 TW Initial release with informal Korean translation.
+#	2. 20160121 TW Added def preference section titles.
+#==============================================================================
+# Korean (ko)
+# Device Preferences
+'''Give your device a name'''.ko=장치 이름을 지정
+'''Set Device Image'''.ko=설정 장치 이미지
+'''Presence timeout (minutes)'''.ko=현재 제한 시간 ( 분)
+'''Tap to set'''.ko=설정 탭
+'''Arrival Sensor'''.ko=도착 센서
+# Events / Notifications
+'''{{ linkText }} battery was {{ value }}'''.ko={{ linkText }} 배터리가 {{ value }}였습니다
+'''{{ linkText }} has arrived'''.ko={{ linkText }} 도착
+'''{{ linkText }} has left'''.ko={{ linkText }} 남아있다
+#==============================================================================
\ No newline at end of file