diff --git a/includes/discovery/temperatures/zyxel-ies.inc.php b/includes/discovery/temperatures/zyxel-ies.inc.php
new file mode 100644
index 0000000000..b783dbcb3e
--- /dev/null
+++ b/includes/discovery/temperatures/zyxel-ies.inc.php
@@ -0,0 +1,29 @@
+<?php
+
+global $valid_temp;
+
+if ($device['os'] == 'ies')
+{
+
+  echo("ZyXEL IES ");
+  
+  $oids = array();  
+  
+  $oids = snmpwalk_cache_multi_oid($device, "accessSwitchSysTempCurValue", $oids, "ZYXEL-AS-MIB");
+  $oids = snmpwalk_cache_multi_oid($device, "accessSwitchSysTempHighThresh", $oids, "ZYXEL-AS-MIB");
+  
+  if(is_array($oids[$device['device_id']]))
+  {
+    foreach($oids[$device[device_id]] as $index => $entry)
+    {
+      $entPhysicalIndex = $index;
+      $descr = trim(snmp_get($device, "accessSwitchSysTempDescr.".$index, "-Oqv", "ZYXEL-AS-MIB"),'"');
+      $oid = ".1.3.6.1.4.1.890.1.5.1.1.6.1.2.".$index;
+      $current = $entry['accessSwitchSysTempCurValue'];
+      $divisor = 1;
+  
+      discover_temperature($valid_temp, $device, $oid, $index, "entity-sensor", $descr, $divisor, NULL, $entry['accessSwitchSysTempHighThresh'], $current);
+    }
+  }
+}
+?>