diff --git a/src/AgConfigure.cpp b/src/AgConfigure.cpp
index 29bd062..5affa79 100644
--- a/src/AgConfigure.cpp
+++ b/src/AgConfigure.cpp
@@ -153,9 +153,15 @@ void Configuration::defaultConfig(void) {
   jconfig[jprop_pmStandard] = jprop_pmStandard_default;
   jconfig[jprop_temperatureUnit] = jprop_temperatureUnit_default;
   jconfig[jprop_postDataToAirGradient] = jprop_postDataToAirGradient_default;
-  jconfig[jprop_ledBarBrightness] = jprop_ledBarBrightness_default;
-  jconfig[jprop_displayBrightness] = jprop_displayBrightness_default;
-  jconfig[jprop_ledBarMode] = jprop_ledBarBrightness_default;
+  if (ag->isOne) {
+    jconfig[jprop_ledBarBrightness] = jprop_ledBarBrightness_default;
+  }
+  if (ag->isOne() || ag->isPro3_7() || ag->isPro4_2() || ag->isBasic()) {
+    jconfig[jprop_displayBrightness] = jprop_displayBrightness_default;
+  }
+  if (ag->isOne()) {
+    jconfig[jprop_ledBarMode] = jprop_ledBarBrightness_default;
+  }
   jconfig[jprop_tvocLearningOffset] = jprop_tvocLearningOffset_default;
   jconfig[jprop_noxLearningOffset] = jprop_noxLearningOffset_default;
   jconfig[jprop_abcDays] = jprop_abcDays_default;