diff --git a/lib/towerops_web/channels/agent_channel.ex b/lib/towerops_web/channels/agent_channel.ex
index 048536cf..878fd339 100644
--- a/lib/towerops_web/channels/agent_channel.ex
+++ b/lib/towerops_web/channels/agent_channel.ex
@@ -293,6 +293,20 @@ defmodule ToweropsWeb.AgentChannel do
         # ifXTable
         oids: ["1.3.6.1.2.1.31.1.1.1"]
       },
+      # Sensor discovery - ENTITY-SENSOR-MIB (WALK)
+      %SnmpQuery{
+        query_type: :WALK,
+        oids: [
+          # ENTITY-SENSOR-MIB - sensor tables
+          "1.3.6.1.2.1.99.1.1.1",
+          # ENTITY-MIB - physical entity descriptions (needed for sensor names)
+          "1.3.6.1.2.1.47.1.1.1.1.2",
+          # entPhysicalName
+          "1.3.6.1.2.1.47.1.1.1.1.7",
+          # entPhysicalClass
+          "1.3.6.1.2.1.47.1.1.1.1.5"
+        ]
+      },
       # Vendor-specific MIBs (WALK)
       %SnmpQuery{
         query_type: :WALK,