diff --git a/bin/firmware-debug.bin b/bin/firmware-debug.bin
index dede29f..af786e7 100644
Binary files a/bin/firmware-debug.bin and b/bin/firmware-debug.bin differ
diff --git a/bin/firmware.bin b/bin/firmware.bin
index c04bfbf..9e146b7 100644
Binary files a/bin/firmware.bin and b/bin/firmware.bin differ
diff --git a/src/config.cpp b/src/config.cpp
index affe5dc..645bc5f 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -38,6 +38,7 @@ Config::Config() {
     sprintf(&buf[0], "" WIFI_MDNS "%s", getID() );
     mDNS = &buf[0];
     setTempFormat('C');
+    setGravityFormat('G');
     setSleepInterval(900);             // 15 minutes
     setVoltageFactor(1.59);           // Conversion factor for battery
     setTempSensorAdj(0.0);
@@ -58,9 +59,10 @@ void Config::createJson(DynamicJsonDocument& doc) {
     doc[ CFG_PARAM_PUSH_HTTP ]        = getHttpPushTarget();
     doc[ CFG_PARAM_PUSH_HTTP2 ]       = getHttpPushTarget2();
     doc[ CFG_PARAM_SLEEP_INTERVAL ]   = getSleepInterval();
-    doc[ CFG_PARAM_PUSH_INTERVAL ]    = getSleepInterval();         // TODO: @deprecated
+//  doc[ CFG_PARAM_PUSH_INTERVAL ]    = getSleepInterval();         // TODO: @deprecated
     doc[ CFG_PARAM_VOLTAGEFACTOR ]    = getVoltageFactor();
     doc[ CFG_PARAM_GRAVITY_FORMULA ]  = getGravityFormula();
+    doc[ CFG_PARAM_GRAVITY_FORMAT ]   = String(getGravityFormat());
     doc[ CFG_PARAM_TEMP_ADJ ]         = getTempSensorAdj();
     doc[ CFG_PARAM_GRAVITY_TEMP_ADJ ] = isGravityTempAdj();
 
@@ -169,6 +171,10 @@ bool Config::loadFile() {
         setVoltageFactor( doc[ CFG_PARAM_VOLTAGEFACTOR ].as<float>() );
     if( !doc[ CFG_PARAM_GRAVITY_FORMULA ].isNull() )
         setGravityFormula( doc[ CFG_PARAM_GRAVITY_FORMULA ] );
+    if( !doc[ CFG_PARAM_GRAVITY_FORMAT ].isNull() ) {
+        String s = doc[ CFG_PARAM_GRAVITY_FORMAT ];
+        setGravityFormat( s.charAt(0) );
+    }
     if( !doc[ CFG_PARAM_TEMP_ADJ ].isNull() )
         setTempSensorAdj( doc[ CFG_PARAM_TEMP_ADJ ].as<float>() );
 
@@ -230,6 +236,7 @@ void Config::debug() {
     Log.verbose(F("CFG : Temp Adj; %F." CR), getTempSensorAdj() );
     Log.verbose(F("CFG : VoltageFactor; %F." CR), getVoltageFactor() );
     Log.verbose(F("CFG : Gravity formula; '%s'." CR), getGravityFormula() );
+    Log.verbose(F("CFG : Gravity format; '%c'." CR), getGravityFormat() );
     Log.verbose(F("CFG : Push brewfather; '%s'." CR), getBrewfatherPushTarget() );
     Log.verbose(F("CFG : Push http; '%s'." CR), getHttpPushTarget() );
     Log.verbose(F("CFG : Push http2; '%s'." CR), getHttpPushTarget2() );
diff --git a/src/config.h b/src/config.h
index 6eb48da..8d24dce 100644
--- a/src/config.h
+++ b/src/config.h
@@ -54,6 +54,7 @@ SOFTWARE.
 #define CFG_PARAM_TEMPFORMAT         "temp-format"                    // C or F
 #define CFG_PARAM_VOLTAGEFACTOR      "voltage-factor"                 // Factor to calculate the battery voltage
 #define CFG_PARAM_GRAVITY_FORMULA    "gravity-formula"                // Formula for calculating gravity
+#define CFG_PARAM_GRAVITY_FORMAT     "gravity-format"                 // Gravity format G or P
 #define CFG_PARAM_GRAVITY_TEMP_ADJ   "gravity-temp-adjustment"        // True/False. Adjust gravity for temperature
 #define CFG_PARAM_TEMP_ADJ           "temp-adjustment-value"          // Correction value for temp sensor
 #define CFG_PARAM_GYRO_CALIBRATION   "gyro-calibration-data"          // READ ONLY