diff --git a/runtime/Mk2_3phase_RFdatalog_temp/Mk2_3phase_RFdatalog_temp.ino b/runtime/Mk2_3phase_RFdatalog_temp/Mk2_3phase_RFdatalog_temp.ino
index c9398a7..c8b9a84 100644
--- a/runtime/Mk2_3phase_RFdatalog_temp/Mk2_3phase_RFdatalog_temp.ino
+++ b/runtime/Mk2_3phase_RFdatalog_temp/Mk2_3phase_RFdatalog_temp.ino
@@ -184,6 +184,6 @@
  */
 
 static_assert(__cplusplus >= 201703L, "**** Please define 'gnu++17' in 'platform.txt' ! ****");
-static_assert(__cplusplus >= 201703L, "See also : https://github.com/FredM67/PVRouter-3-phase/blob/main/Mk2_3phase_RFdatalog_temp/Readme.md");
+static_assert(__cplusplus >= 201703L, "See also : https://github.com/FredM67/PVRouter-3-phase/blob/main/runtime/Mk2_3phase_RFdatalog_temp/Readme.md");
 
 // The active code can be found in the other cpp/h files
diff --git a/runtime/Mk2_3phase_RFdatalog_temp/config.h b/runtime/Mk2_3phase_RFdatalog_temp/config.h
index 7bea63d..54a4b86 100644
--- a/runtime/Mk2_3phase_RFdatalog_temp/config.h
+++ b/runtime/Mk2_3phase_RFdatalog_temp/config.h
@@ -50,7 +50,7 @@ inline constexpr bool OVERRIDE_PIN_PRESENT{ false };                    /**< set
 #endif
 
 inline constexpr bool WATCHDOG_PIN_PRESENT{ false }; /**< set it to 'true' if there's a watch led */
-inline constexpr bool RELAY_DIVERSION{ false };       /**< set it to 'true' if a relay is used for diversion */
+inline constexpr bool RELAY_DIVERSION{ true };       /**< set it to 'true' if a relay is used for diversion */
 inline constexpr bool DUAL_TARIFF{ false };          /**< set it to 'true' if there's a dual tariff each day AND the router is connected to the billing meter */
 
 // ----------- Pinout assignments -----------
@@ -83,7 +83,7 @@ inline constexpr uint8_t watchDogPin{ 0xff };   /**< watch dog LED */
 
 inline constexpr uint8_t tempSensorPin{ 0xff }; /**< for 3-phase PCB, sensor pin */
 
-inline constexpr RelayEngine relays{ { { 0xff, 1000, 200, 1, 1 } } }; /**< config for relay diversion, see class definition for defaults and advanced options */
+inline constexpr RelayEngine relays{ 15_i, { { 6, 1000, 200, 1, 1 } } }; /**< config for relay diversion, see class definition for defaults and advanced options */
 
 inline constexpr uint8_t ul_OFF_PEAK_DURATION{ 8 };                        /**< Duration of the off-peak period in hours */
 inline constexpr pairForceLoad rg_ForceLoad[NO_OF_DUMPLOADS]{ { -3, 2 } }; /**< force config for load #1 ONLY for dual tariff */
diff --git a/runtime/Mk2_3phase_RFdatalog_temp/types.h b/runtime/Mk2_3phase_RFdatalog_temp/types.h
index 4847994..1423eba 100644
--- a/runtime/Mk2_3phase_RFdatalog_temp/types.h
+++ b/runtime/Mk2_3phase_RFdatalog_temp/types.h
@@ -15,6 +15,7 @@
 #include <Arduino.h>
 
 #include "constants.h"
+#include "type_traits.hpp"
 
 // -------------------------------
 // definitions of enumerated types
diff --git a/runtime/Mk2_3phase_RFdatalog_temp/utils_relay.h b/runtime/Mk2_3phase_RFdatalog_temp/utils_relay.h
index cc9e995..86db719 100644
--- a/runtime/Mk2_3phase_RFdatalog_temp/utils_relay.h
+++ b/runtime/Mk2_3phase_RFdatalog_temp/utils_relay.h
@@ -20,22 +20,24 @@
 #include "ewma_avg.hpp"
 #include "utils_pins.h"
 
+#include "debug.h"
+
 /**
  * @brief Relay diversion config and engine
  * 
  * @ingroup RelayDiversion
  */
-class relayOutput
+class RelayOutput
 {
 public:
-  constexpr relayOutput() = delete;
+  constexpr RelayOutput() = delete;
 
   /**
    * @brief Construct a new relay Config object with default parameters
    * 
    * @param _relay_pin Control pin for the relay
    */
-  explicit constexpr relayOutput(const uint8_t _relay_pin)
+  explicit constexpr RelayOutput(const uint8_t _relay_pin)
     : relay_pin{_relay_pin}
   {
   }
@@ -47,7 +49,7 @@ class relayOutput
    * @param _surplusThreshold Surplus threshold to turn relay ON
    * @param _importThreshold Import threshold to turn relay OFF
    */
-  constexpr relayOutput(uint8_t _relay_pin, int16_t _surplusThreshold, int16_t _importThreshold)
+  constexpr RelayOutput(uint8_t _relay_pin, int16_t _surplusThreshold, int16_t _importThreshold)
     : relay_pin{_relay_pin}, surplusThreshold{-abs(_surplusThreshold)}, importThreshold{abs(_importThreshold)}
   {
   }
@@ -61,7 +63,7 @@ class relayOutput
    * @param _minON Minimum duration in minutes to leave relay ON
    * @param _minOFF Minimum duration in minutes to leave relay OFF
    */
-  constexpr relayOutput(uint8_t _relay_pin, int16_t _surplusThreshold, int16_t _importThreshold, uint16_t _minON, uint16_t _minOFF)
+  constexpr RelayOutput(uint8_t _relay_pin, int16_t _surplusThreshold, int16_t _importThreshold, uint16_t _minON, uint16_t _minOFF)
     : relay_pin{_relay_pin}, surplusThreshold{-abs(_surplusThreshold)}, importThreshold{abs(_importThreshold)}, minON{_minON * 60}, minOFF{_minOFF * 60}
   {
   }
@@ -255,7 +257,7 @@ class RelayEngine
    * @brief Construct a list of relays
    * 
    */
-  explicit constexpr RelayEngine(const relayOutput (&ref)[N])
+  explicit constexpr RelayEngine(const RelayOutput (&ref)[N])
     : relay(ref)
   {
   }
@@ -264,7 +266,7 @@ class RelayEngine
    * @brief Construct a list of relays with a custom sliding average
    * 
    */
-  constexpr RelayEngine(integral_constant< uint8_t, D > ic, const relayOutput (&ref)[N])
+  constexpr RelayEngine(integral_constant< uint8_t, D > ic, const RelayOutput (&ref)[N])
     : relay(ref)
   {
   }
@@ -391,7 +393,7 @@ class RelayEngine
   }
 
 private:
-  const relayOutput relay[N]; /**< Array of relays */
+  const RelayOutput relay[N]; /**< Array of relays */
 
   mutable uint8_t settle_change{ 60 }; /**< Delay in seconds until next change occurs */
 
diff --git a/runtime/test/test_RelayEngine/test_main.cpp b/runtime/test/test_RelayEngine/test_main.cpp
new file mode 100644
index 0000000..303e29e
--- /dev/null
+++ b/runtime/test/test_RelayEngine/test_main.cpp
@@ -0,0 +1,63 @@
+#include <Arduino.h>
+#include <unity.h>
+
+#include "utils_relay.h"
+
+// Assuming you have a RelayOutput array defined somewhere
+const RelayOutput relayArray[2]{ { 5, 1000, 200, 5, 5 }, { 6, 1000, 200, 5, 5 } };
+
+RelayEngine< 2 >* relayEngineTest;
+
+void setUp(void)
+{
+  relayEngineTest = new RelayEngine< 2 >(relayArray);
+}
+
+void tearDown(void)
+{
+  delete relayEngineTest;
+}
+
+void test_get_size(void)
+{
+  TEST_ASSERT_EQUAL(2, relayEngineTest->get_size());
+}
+
+void test_get_relay(void)
+{
+    for(uint8_t i = 0; i < relayEngineTest->get_size(); ++i) {
+        TEST_ASSERT_EQUAL(true, relayArray[i].get_pin() == relayEngineTest->get_relay(i).get_pin());
+        TEST_ASSERT_EQUAL(true, relayArray[i].get_minOFF() == relayEngineTest->get_relay(i).get_minOFF());
+        TEST_ASSERT_EQUAL(true, relayArray[i].get_minON() == relayEngineTest->get_relay(i).get_minON());
+        TEST_ASSERT_EQUAL(true, relayArray[i].get_surplusThreshold() == relayEngineTest->get_relay(i).get_surplusThreshold());
+        TEST_ASSERT_EQUAL(true, relayArray[i].get_importThreshold() == relayEngineTest->get_relay(i).get_importThreshold());
+    }
+}
+
+void test_get_average(void)
+{
+  // Assuming initial average is 0
+  TEST_ASSERT_EQUAL(0, RelayEngine< 2 >::get_average());
+}
+
+void test_update_average(void)
+{
+  RelayEngine< 2 >::update_average(100);
+  // Assuming the average changes after update
+  TEST_ASSERT_NOT_EQUAL(0, RelayEngine< 2 >::get_average());
+}
+
+void setup()
+{
+  UNITY_BEGIN();
+  RUN_TEST(test_get_size);
+  RUN_TEST(test_get_relay);
+  RUN_TEST(test_get_average);
+  RUN_TEST(test_update_average);
+  UNITY_END();
+}
+
+void loop()
+{
+  // Do nothing here
+}
\ No newline at end of file
diff --git a/runtime/test/test_RelayOutput/test_,main.cpp b/runtime/test/test_RelayOutput/test_,main.cpp
new file mode 100644
index 0000000..96c21ef
--- /dev/null
+++ b/runtime/test/test_RelayOutput/test_,main.cpp
@@ -0,0 +1,75 @@
+#include <Arduino.h>
+#include <unity.h>
+
+#include "utils_relay.h"
+
+static_assert(__cplusplus >= 201703L, "See also : https://github.com/FredM67/PVRouter-3-phase/blob/main/runtime/Mk2_3phase_RFdatalog_temp/Readme.md");
+
+RelayOutput* RelayOutputTest;
+
+void setUp(void) {
+    RelayOutputTest = new RelayOutput(5, 1000, 200, 5, 5);
+}
+
+void tearDown(void) {
+    delete RelayOutputTest;
+}
+
+void test_get_pin(void) {
+    TEST_ASSERT_EQUAL(5, RelayOutputTest->get_pin());
+}
+
+void test_get_surplusThreshold(void) {
+    TEST_ASSERT_EQUAL(1000, RelayOutputTest->get_surplusThreshold());
+}
+
+void test_get_importThreshold(void) {
+    TEST_ASSERT_EQUAL(200, RelayOutputTest->get_importThreshold());
+}
+
+void test_get_minON(void) {
+    TEST_ASSERT_EQUAL(5 * 60, RelayOutputTest->get_minON());
+}
+
+void test_get_minOFF(void) {
+    TEST_ASSERT_EQUAL(5 * 60, RelayOutputTest->get_minOFF());
+}
+
+void test_isRelayON(void) {
+    TEST_ASSERT_EQUAL(false, RelayOutputTest->isRelayON());
+}
+
+void test_proceed_relay(void) {
+    TEST_ASSERT_EQUAL(false, RelayOutputTest->proceed_relay(150));
+    TEST_ASSERT_EQUAL(false, RelayOutputTest->isRelayON());
+
+    for(uint16_t _time = 0; _time < RelayOutputTest->get_minOFF(); ++_time) {
+        RelayOutputTest->inc_duration();
+    }
+
+    TEST_ASSERT_EQUAL(true, RelayOutputTest->proceed_relay(-1500));
+    TEST_ASSERT_EQUAL(true, RelayOutputTest->isRelayON());
+
+    for(uint16_t _time = 0; _time < RelayOutputTest->get_minON(); ++_time) {
+        RelayOutputTest->inc_duration();
+    }
+
+    TEST_ASSERT_EQUAL(true, RelayOutputTest->proceed_relay(250));
+    TEST_ASSERT_EQUAL(false, RelayOutputTest->isRelayON());
+}
+
+void setup() {
+    UNITY_BEGIN();
+    RUN_TEST(test_get_pin);
+    RUN_TEST(test_get_surplusThreshold);
+    RUN_TEST(test_get_importThreshold);
+    RUN_TEST(test_get_minON);
+    RUN_TEST(test_get_minOFF);
+    RUN_TEST(test_isRelayON);
+    RUN_TEST(test_proceed_relay);
+    UNITY_END();
+}
+
+void loop() {
+    // Do nothing here
+}
\ No newline at end of file