diff --git a/CHANGELOG.md b/CHANGELOG.md
index c37bfbaad..a7afe1c87 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@ All notable changes to this project will be documented in this file.
 
 ### Changed
 - ESP32 Platform from 2024.12.30 to 2025.01.30, Framework (Arduino Core) from v3.1.0.241206 to v3.1.1.250109 and IDF to 5.3.2 (#22792)
+- Allow negative values for AdcParam/AdcGpio INPUT, TEMP and RANGE parameters (#22809)
 
 ### Fixed
 
diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index 525e4961b..90dd1fa3a 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -141,6 +141,7 @@ The latter links can be used for OTA upgrades too like ``OtaUrl https://ota.tasm
 - ESP32 Platform from 2024.12.30 to 2025.01.30, Framework (Arduino Core) from v3.1.0.241206 to v3.1.1.250109 and IDF to 5.3.2 [#22792](https://github.com/arendst/Tasmota/issues/22792)
 - GPIOViewer from v1.5.6 to v1.5.9 (No functional change)
 - Postpone save_data during light animation when fade is Off
+- Allow negative values for AdcParam/AdcGpio INPUT, TEMP and RANGE parameters [#22809](https://github.com/arendst/Tasmota/issues/22809)
 - Command `Pixels` has backwards compatible arguments fixing #22755 [#22791](https://github.com/arendst/Tasmota/issues/22791)
 - ESP32 disable PSRAM check (and on restart some relay toggles) with `#define DISABLE_PSRAMCHECK true` [#21266](https://github.com/arendst/Tasmota/issues/21266)
 - Berry bit-shift operators to `int64` [#22709](https://github.com/arendst/Tasmota/issues/22709)
diff --git a/tasmota/tasmota_xsns_sensor/xsns_02_analog.ino b/tasmota/tasmota_xsns_sensor/xsns_02_analog.ino
index bcd9c358f..7eac532a7 100644
--- a/tasmota/tasmota_xsns_sensor/xsns_02_analog.ino
+++ b/tasmota/tasmota_xsns_sensor/xsns_02_analog.ino
@@ -1055,8 +1055,8 @@ void CmndAdcParam(void) {
         if ((GPIO_ADC_INPUT == adc_type) ||
             (GPIO_ADC_TEMP == adc_type) ||
             (GPIO_ADC_RANGE == adc_type)) {
-          Adc[channel].param[2] = abs(strtol(ArgV(argument, 4), nullptr, 10));      // param3 = abs(int)
-          Adc[channel].param[3] = abs(strtol(ArgV(argument, 5), nullptr, 10));      // param4 = abs(int)
+          Adc[channel].param[2] = strtol(ArgV(argument, 4), nullptr, 10);           // param3 = int
+          Adc[channel].param[3] = strtol(ArgV(argument, 5), nullptr, 10);           // param4 = int
         } else {
           Adc[channel].param[2] = (int)(CharToFloat(ArgV(argument, 4)) * 10000);    // param3 = float
           if (ArgC() > 4) {
@@ -1068,7 +1068,7 @@ void CmndAdcParam(void) {
         if (GPIO_ADC_PH == adc_type) {
           float phLow = CharToFloat(ArgV(argument, 2));
           Adc[channel].param[0] = phLow * ANALOG_PH_DECIMAL_MULTIPLIER;             // param1 = float
-//            Adc[channel].param[1] = strtol(ArgV(argument, 3), nullptr, 10);           // param2 = int
+//          Adc[channel].param[1] = strtol(ArgV(argument, 3), nullptr, 10);           // param2 = int
           float phHigh = CharToFloat(ArgV(argument, 4));
           Adc[channel].param[2] = phHigh * ANALOG_PH_DECIMAL_MULTIPLIER;            // param3 = float
           Adc[channel].param[3] = strtol(ArgV(argument, 5), nullptr, 10);           // param4 = int
@@ -1084,9 +1084,9 @@ void CmndAdcParam(void) {
           }
         }
         if (GPIO_ADC_MQ == adc_type) {
-          float a = CharToFloat(ArgV(argument, 3));                           // param2 = float
-          float b = CharToFloat(ArgV(argument, 4));                           // param3 = float
-          float ratioMQCleanAir = CharToFloat(ArgV(argument, 5));             // param4 = float
+          float a = CharToFloat(ArgV(argument, 3));                                 // param2 = float
+          float b = CharToFloat(ArgV(argument, 4));                                 // param3 = float
+          float ratioMQCleanAir = CharToFloat(ArgV(argument, 5));                   // param4 = float
           if ((0 == a) && (0 == b) && (0 == ratioMQCleanAir)) {
             if (2 == Adc[channel].param[0]) {                                       // param1 = int
               a = 574.25;
@@ -1115,7 +1115,7 @@ void CmndAdcParam(void) {
 
 //            AddLog(LOG_LEVEL_INFO, PSTR("ADC: MQ reset mq%d, a = %2_f, b = %2_f, ratioMQCleanAir = %2_f"), Adc[channel].param[0], &a, &b, &ratioMQCleanAir);
         }
-      } else {                                         // Set default values based on current adc type
+      } else {                                                                      // Set default values based on current adc type
         // AdcParam 1
         AdcInitParams(channel);
       }
@@ -1124,7 +1124,7 @@ void CmndAdcParam(void) {
 
     // AdcParam / AdcGpio
     AdcGetSettings(channel);
-    Response_P(PSTR("{\"%s"), XdrvMailbox.command);      // {"AdcParam or {"AdcGpio
+    Response_P(PSTR("{\"%s"), XdrvMailbox.command);                                 // {"AdcParam or {"AdcGpio
     if (strstr_P(XdrvMailbox.command, PSTR(D_CMND_ADCGPIO))) {
 #ifdef ESP8266
       ResponseAppend_P(PSTR("\":["));
@@ -1139,18 +1139,18 @@ void CmndAdcParam(void) {
         (GPIO_ADC_TEMP == adc_type) ||
         (GPIO_ADC_RANGE == adc_type) ||
         (GPIO_ADC_MQ == adc_type)) {
-      ResponseAppend_P(PSTR(",%d,%d"), Adc[channel].param[2], Adc[channel].param[3]);    // param3 = int, param4 = int
+      ResponseAppend_P(PSTR(",%d,%d"), Adc[channel].param[2], Adc[channel].param[3]);  // param3 = int, param4 = int
     }
     else {
       float param = (float)Adc[channel].param[2] / 10000;
-      ResponseAppend_P(PSTR(",%*_f"), Decimals(Adc[channel].param[2]), &param);    // param3 = float
+      ResponseAppend_P(PSTR(",%*_f"), Decimals(Adc[channel].param[2]), &param);     // param3 = float
       if ((GPIO_ADC_CT_POWER == adc_type) ||
           (GPIO_ADC_VOLTAGE == adc_type) ||
           (GPIO_ADC_CURRENT == adc_type)) {
         param = (float)Adc[channel].param[3] / 10000;
-        ResponseAppend_P(PSTR(",%*_f"), Decimals(Adc[channel].param[3]), &param);  // param4 = float
+        ResponseAppend_P(PSTR(",%*_f"), Decimals(Adc[channel].param[3]), &param);   // param4 = float
       } else {
-        ResponseAppend_P(PSTR(",%d"), Adc[channel].param[3]);                      // param4 = int
+        ResponseAppend_P(PSTR(",%d"), Adc[channel].param[3]);                       // param4 = int
       }      
     }
     ResponseAppend_P(PSTR("]}"));