diff --git a/hydrobot_def.json b/hydrobot_def.json
--- a/hydrobot_def.json
+++ b/hydrobot_def.json
@@ -40,11 +40,20 @@
                     
                 },
                 {
-                    "name" : "light",
+                    "name" : "eco2",
                     "type" : "input",
                     "sensor_num" : "0",
                     "functions" : [
-                        "ambient_light"
+                        "air_eco2"
+                    ]
+                    
+                },
+                {
+                    "name" : "tvoc",
+                    "type" : "input",
+                    "sensor_num" : "0",
+                    "functions" : [
+                        "air_tvoc"
                     ]
                     
                 }
@@ -232,7 +241,35 @@
             "id" : "0x04",
             "name" : "protomodule",
             "display" : "ProtoModule",
-            "class" : "ProtoModule"
+            "class" : "ProtoModule",
+            "sensors" : [
+                {
+                    "name" : "ph",
+                    "type" : "input",
+                    "sensor_num" : "0",
+                    "functions" : [
+                        "ph"
+                    ]
+                    
+                }
+            ]
+        },
+        {
+            "id" : "0x05",
+            "name" : "lightsense",
+            "display" : "LightSense",
+            "class" : "LightSense",
+            "sensors" : [
+                {
+                    "name" : "light",
+                    "type" : "input",
+                    "sensor_num" : "0",
+                    "functions" : [
+                        "ambient_light"
+                    ]
+                    
+                }
+            ]
         }
     ],
     "data_keys" : [
@@ -321,6 +358,18 @@
             "units" : "pH"
         },
         {
+            "key" : "0x000F",
+            "name" : "air_eco2",
+            "display" : "Air eCO2",
+            "units" : "ppm"
+        },
+        {
+            "key" : "0x0010",
+            "name" : "air_tvoc",
+            "display" : "Air TVOC",
+            "units" : "ppb"
+        },
+        {
             "key" : "0x0100",
             "name" : "can_id",
             "display" : "CAN ID",