diff --git a/app/include/Serializer.h b/app/include/Serializer.h
index 4f11042..2973086 100644
--- a/app/include/Serializer.h
+++ b/app/include/Serializer.h
@@ -17,9 +17,13 @@ using json = nlohmann::json;
 class Serializer {
 public:
   Serializer();
-  void Serialize(std::vector<std::shared_ptr<Fan>> fans);
+  void SerializeFans(std::vector<std::shared_ptr<Fan>> fans);
   std::vector<std::shared_ptr<Fan>>
-  Deserialize(std::vector<std::shared_ptr<Sensor>> availableSensors);
+  DeserializeFans(std::vector<std::shared_ptr<Sensor>> availableSensors);
+
+  void SerializeTempSensors(std::vector<std::shared_ptr<Sensor>> senors);
+  std::vector<std::shared_ptr<Sensor>>
+  DeserializeTempSensors(std::vector<std::shared_ptr<Sensor>> availableSensors);
 
 private:
   void WriteJson(json o);
diff --git a/app/src/Serializer.cxx b/app/src/Serializer.cxx
index d334613..ea6bcfb 100644
--- a/app/src/Serializer.cxx
+++ b/app/src/Serializer.cxx
@@ -18,22 +18,18 @@ Serializer::Serializer() {
   }
 }
 
-void Serializer::Serialize(vector<shared_ptr<Fan>> fans) {
-  json fansArr;
-
-  for (auto f : fans) {
-    fansArr.emplace_back(f->toJson());
-  }
-
+void Serializer::SerializeFans(vector<shared_ptr<Fan>> fans) {
   json obj;
 
-  obj["fans"] = fansArr;
+  for (auto f : fans) {
+    obj["fans"].push_back(f->toJson());
+  }
 
   WriteJson(obj);
 }
 
 vector<shared_ptr<Fan>>
-Serializer::Deserialize(vector<shared_ptr<Sensor>> availableSensors) {
+Serializer::DeserializeFans(vector<shared_ptr<Sensor>> availableSensors) {
   vector<shared_ptr<Fan>> mapping;
 
   // Create a for the sensors first, then searching becomes cheaper
@@ -57,11 +53,35 @@ Serializer::Deserialize(vector<shared_ptr<Sensor>> availableSensors) {
 }
 
 void Serializer::WriteJson(json o) {
+  json obj;
+
+  if (fs::exists(fs::path(SERIALIZATION_DIR) / FANS_JSON_FILENAME)) {
+    auto obj = ReadJson();
+  }
+
+  for (auto &[key, value] : o.items()) {
+    obj[key] = value;
+  }
+
   ofstream ostrm(fs::path(SERIALIZATION_DIR) / FANS_JSON_FILENAME, ios::trunc);
-  ostrm << o.dump(2) << "\n";
+  ostrm << obj.dump(2) << "\n";
 }
 
 json Serializer::ReadJson() {
   ifstream istrm(fs::path(SERIALIZATION_DIR) / FANS_JSON_FILENAME);
   return json::parse(istrm);
 }
+
+void Serializer::SerializeTempSensors(vector<shared_ptr<Sensor>> sensors) {
+  json obj;
+
+  for (auto s : sensors) {
+    obj["tempSensors"].push_back(s->toJson());
+  }
+
+  WriteJson(obj);
+}
+vector<shared_ptr<Sensor>>
+DeserializeTempSensors(vector<shared_ptr<Sensor>> availableSensors) {
+  return vector<shared_ptr<Sensor>>();
+}
diff --git a/app/src/main.cxx b/app/src/main.cxx
index ca372a9..4510248 100644
--- a/app/src/main.cxx
+++ b/app/src/main.cxx
@@ -26,10 +26,10 @@ int main() {
   std::vector<std::shared_ptr<Fan>> fans;
 
   if (fs::exists(fs::path(SERIALIZATION_DIR) / FANS_JSON_FILENAME)) {
-    fans = s.Deserialize(pwmSensors);
+    fans = s.DeserializeFans(pwmSensors);
   } else {
     fans = m.createMapping(pwmSensors, controls);
-    s.Serialize(fans);
+    s.SerializeFans(fans);
   }
 
   for (auto f : fans) {
diff --git a/doc/Application Overview.drawio b/doc/Application Overview.drawio
new file mode 100644
index 0000000..3691335
--- /dev/null
+++ b/doc/Application Overview.drawio	
@@ -0,0 +1 @@
+<mxfile host="app.diagrams.net" modified="2022-09-24T19:31:05.408Z" agent="5.0 (X11)" etag="F8WQQZ1xw24pL79IvZh_" version="20.2.2" type="device"><diagram id="bxDzWbPEviacuxaYKsiD" name="Page-1">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</diagram></mxfile>
\ No newline at end of file
diff --git a/doc/Application Overview.jpg b/doc/Application Overview.jpg
new file mode 100644
index 0000000..d9fc213
Binary files /dev/null and b/doc/Application Overview.jpg differ