diff --git a/tests/modbus_server_tester.hpp b/tests/modbus_server_tester.hpp
index c9b4416..ccfa204 100644
--- a/tests/modbus_server_tester.hpp
+++ b/tests/modbus_server_tester.hpp
@@ -19,18 +19,43 @@
 constexpr uint16_t testSuccessReadHoldingRegisterOffset = 0x0102;
 constexpr uint16_t testSuccessReadHoldingRegisterCount = 0x2;
 constexpr uint16_t testSuccessReadHoldingRegisterSegmentedOffset = 0x0103;
-constexpr std::array<uint16_t, testSuccessReadHoldingRegisterCount>
-    testSuccessReadHoldingRegisterResponse = {0x1234, 0x5678};
+const std::vector<uint16_t> testSuccessReadHoldingRegisterResponse = {
+    0x1234, 0x5678};
 constexpr uint16_t testFailureReadHoldingRegister = 0x0105;
 
 // Device Inventory Testing Constants
 constexpr uint16_t testReadHoldingRegisterModelOffset = 0x0112;
 constexpr uint16_t testReadHoldingRegisterModelCount = 0x8;
-constexpr std::array<uint16_t, testReadHoldingRegisterModelCount>
-    testReadHoldingRegisterModel = {0x5244, 0x4630, 0x3430, 0x4453,
-                                    0x5335, 0x3139, 0x0000, 0x3000};
+const std::vector<uint16_t> testReadHoldingRegisterModel = {
+    0x5244, 0x4630, 0x3430, 0x4453, 0x5335, 0x3139, 0x0000, 0x3000};
 constexpr std::string testReadHoldingRegisterModelStr = "RDF040DSS519";
 
+// Device Sensors Testing Constants
+constexpr uint16_t testReadHoldingRegisterTempCount = 0x1;
+constexpr uint16_t testReadHoldingRegisterTempUnsignedOffset = 0x0113;
+const std::vector<uint16_t> testReadHoldingRegisterTempUnsigned = {
+    0x0050}; // 80.0
+constexpr uint16_t testReadHoldingRegisterTempSignedOffset = 0x0114;
+const std::vector<uint16_t> testReadHoldingRegisterTempSigned = {
+    0xFFB0}; // -80.0
+
+static const std::map<uint16_t, std::tuple<uint16_t, std::vector<uint16_t>>>
+    testReadHoldingRegisterMap = {
+        {testSuccessReadHoldingRegisterOffset,
+         {testSuccessReadHoldingRegisterCount,
+          testSuccessReadHoldingRegisterResponse}},
+        {testSuccessReadHoldingRegisterSegmentedOffset,
+         {testSuccessReadHoldingRegisterCount,
+          testSuccessReadHoldingRegisterResponse}},
+        {testReadHoldingRegisterModelOffset,
+         {testReadHoldingRegisterModelCount, testReadHoldingRegisterModel}},
+        {testReadHoldingRegisterTempUnsignedOffset,
+         {testReadHoldingRegisterTempCount,
+          testReadHoldingRegisterTempUnsigned}},
+        {testReadHoldingRegisterTempSignedOffset,
+         {testReadHoldingRegisterTempCount, testReadHoldingRegisterTempSigned}},
+};
+
 class ServerTester
 {
   public: