diff --git a/CO2_Gadget.ino b/CO2_Gadget.ino
index 645d6ad4..b3b8ce85 100644
--- a/CO2_Gadget.ino
+++ b/CO2_Gadget.ino
@@ -104,7 +104,7 @@ uint16_t batteryFullyChargedMillivolts = 4200;  // Voltage of battery when it is
 
 // Variables to control automatic display off to save power
 bool workingOnExternalPower = true;      // True if working on external power (USB connected)
-uint32_t actualDisplayBrightness = 100;  // To know if it's on or off
+uint32_t actualDisplayBrightness = 0;    // To know if it's on or off
 bool displayOffOnExternalPower = false;
 uint16_t timeToDisplayOff = 0;                // Time in seconds to turn off the display to save power.
 volatile uint64_t lastTimeButtonPressed = 0;  // Last time stamp button up was pressed
diff --git a/CO2_Gadget_OLED.h b/CO2_Gadget_OLED.h
index f34ee926..c998ff10 100644
--- a/CO2_Gadget_OLED.h
+++ b/CO2_Gadget_OLED.h
@@ -79,6 +79,7 @@ void initDisplay() {
   } else {
     u8g2.setDisplayRotation(U8G2_R0);
   }
+  setDisplayBrightness(DisplayBrightness);
   displaySplashScreen();
   delay(1000);
 }
diff --git a/CO2_Gadget_TFT.h b/CO2_Gadget_TFT.h
index 039bd32e..166469e7 100644
--- a/CO2_Gadget_TFT.h
+++ b/CO2_Gadget_TFT.h
@@ -300,6 +300,7 @@ void initDisplay() {
     setElementLocations();
     tft.setTextSize(2);
     initBacklight();
+    setDisplayBrightness(DisplayBrightness);
     displaySplashScreen();  // Display init and splash screen
     delay(2000);            // Enjoy the splash screen for 2 seconds
     spr.setColorDepth(16);
diff --git a/platformio.ini b/platformio.ini
index c2edbc44..6288dda4 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -42,7 +42,7 @@ build_flags =
 
     -D MQTT_BROKER_SERVER="\"192.168.1.145"\"
     -D CO2_GADGET_VERSION="\"0.12."\"
-    -D CO2_GADGET_REV="\"021"\"
+    -D CO2_GADGET_REV="\"022"\"
     -D CORE_DEBUG_LEVEL=0
     -DCACHE_DIR=".pio/build"
     -DBUZZER_PIN=2          ; ESP32 pin GPIO13 connected to piezo buzzer