diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/multiple-input-widget.component.html b/ui-ngx/src/app/modules/home/components/widget/lib/multiple-input-widget.component.html
index 256f6e7f9f..0a757fd34f 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/multiple-input-widget.component.html
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/multiple-input-widget.component.html
@@ -85,6 +85,39 @@
               <span class="label-wrapper">{{key.label}}</span>
             </mat-checkbox>
           </div>
+          <div class="input-field" *ngIf="key.settings.dataKeyValueType === 'JSON'">
+            <mat-form-field class="mat-block">
+              <mat-label>{{key.label}}</mat-label>
+              <input
+                matInput
+                type="text"
+                formControlName="{{key.formId}}"
+                tb-json-to-string
+                [readonly]="key.settings.isEditable === 'readonly'"
+                [required]="key.settings.required"
+                (focus)="key.isFocused = true; focusInputElement($event)"
+                (blur)="key.isFocused = false; inputChanged(source, key)"
+              />
+              <ng-container *ngIf="key.settings.icon || key.settings.safeCustomIcon" matPrefix>
+                <mat-icon *ngIf="!key.settings.safeCustomIcon; else customToggleIcon">{{key.settings.icon}}</mat-icon>
+                <ng-template #customToggleIcon>
+                  <img class="mat-icon" [src]="key.settings.safeCustomIcon" alt="icon">
+                </ng-template>
+              </ng-container>
+              <button [disabled]="key.settings.isEditable === 'disabled' || key.settings.isEditable === 'readonly'"
+                      type="button"
+                      matSuffix mat-icon-button
+                      (click)="openEditJSONDialog($event, key, source)">
+                <mat-icon>open_in_new</mat-icon>
+              </button>
+              <mat-error *ngIf="multipleInputFormGroup.get(key.formId).hasError('required')">
+                {{ getErrorMessageText(key.settings,'required') }}
+              </mat-error>
+              <mat-error *ngIf="multipleInputFormGroup.get(key.formId).hasError('invalidJSON')">
+                {{ getErrorMessageText(key.settings,'invalidJSON') | translate }}
+              </mat-error>
+            </mat-form-field>
+          </div>
           <div class="input-field mat-block" *ngIf="key.settings.dataKeyValueType === 'booleanSwitch'">
             <mat-slide-toggle formControlName="{{key.formId}}"
                               [labelPosition]="key.settings.slideToggleLabelPosition"
diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/multiple-input-widget.component.ts b/ui-ngx/src/app/modules/home/components/widget/lib/multiple-input-widget.component.ts
index 51b6d6629f..534be7c676 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/multiple-input-widget.component.ts
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/multiple-input-widget.component.ts
@@ -26,10 +26,10 @@ import { DataKey, Datasource, DatasourceData, DatasourceType, WidgetConfig } fro
 import { IWidgetSubscription } from '@core/api/widget-api.models';
 import {
   createLabelFromDatasource,
-  isBoolean, isDefined,
+  isBoolean,
+  isDefined,
   isDefinedAndNotNull,
   isEqual,
-  isNotEmptyStr,
   isUndefined
 } from '@core/utils';
 import { EntityType } from '@shared/models/entity-type.models';
@@ -42,14 +42,19 @@ import { forkJoin, Observable, Subject } from 'rxjs';
 import { EntityId } from '@shared/models/id/entity-id';
 import { ResizeObserver } from '@juggle/resize-observer';
 import { takeUntil } from 'rxjs/operators';
+import {
+  JsonObjectEditDialogComponent,
+  JsonObjectEditDialogData
+} from '@shared/components/dialog/json-object-edit-dialog.component';
+import { MatDialog } from '@angular/material/dialog';
 import { DomSanitizer, SafeUrl } from '@angular/platform-browser';
 
 type FieldAlignment = 'row' | 'column';
 
 type MultipleInputWidgetDataKeyType = 'server' | 'shared' | 'timeseries';
-type MultipleInputWidgetDataKeyValueType = 'string' | 'double' | 'integer' |
-                                           'booleanCheckbox' | 'booleanSwitch' |
-                                           'dateTime' | 'date' | 'time' | 'select';
+export type MultipleInputWidgetDataKeyValueType = 'string' | 'double' | 'integer' |
+                                                  'JSON' | 'booleanCheckbox' | 'booleanSwitch' |
+                                                  'dateTime' | 'date' | 'time' | 'select';
 type MultipleInputWidgetDataKeyEditableType = 'editable' | 'disabled' | 'readonly';
 
 type ConvertGetValueFunction = (value: any, ctx: WidgetContext) => any;
@@ -90,6 +95,7 @@ interface MultipleInputWidgetDataKeySettings {
   invalidDateErrorMessage?: string;
   minValueErrorMessage?: string;
   maxValueErrorMessage?: string;
+  invalidJsonErrorMessage?: string;
   useCustomIcon: boolean;
   icon: string;
   customIcon: string ;
@@ -103,6 +109,9 @@ interface MultipleInputWidgetDataKeySettings {
   useSetValueFunction?: boolean;
   setValueFunctionBody?: string;
   setValueFunction?: ConvertSetValueFunction;
+  dialogTitle?: string;
+  saveButtonLabel?: string;
+  cancelButtonLabel?: string;
 }
 
 interface MultipleInputWidgetDataKey extends DataKey {
@@ -161,7 +170,8 @@ export class MultipleInputWidgetComponent extends PageComponent implements OnIni
               private fb: UntypedFormBuilder,
               private attributeService: AttributeService,
               private translate: TranslateService,
-              private sanitizer: DomSanitizer) {
+              private sanitizer: DomSanitizer,
+              private dialog: MatDialog) {
     super(store);
   }
 
@@ -425,6 +435,13 @@ export class MultipleInputWidgetComponent extends PageComponent implements OnIni
             case 'select':
               value = keyValue !== null ? keyValue.toString() : null;
               break;
+            case 'JSON':
+              try {
+                value = JSON.parse(keyValue);
+              } catch (e) {
+                value = keyValue ? keyValue : null;
+              }
+              break;
             default:
               value = keyValue;
           }
@@ -520,6 +537,10 @@ export class MultipleInputWidgetComponent extends PageComponent implements OnIni
         errorMessage = keySettings.invalidDateErrorMessage;
         defaultMessage = 'widgets.input-widgets.invalid-date';
         break;
+      case 'invalidJSON':
+        errorMessage = keySettings.invalidJsonErrorMessage;
+        defaultMessage = 'widgets.input-widgets.json-invalid';
+        break;
       default:
         return '';
     }
@@ -670,8 +691,8 @@ export class MultipleInputWidgetComponent extends PageComponent implements OnIni
       }
     });
     if (tasks.length) {
-      forkJoin(tasks).subscribe(
-        () => {
+      forkJoin(tasks).subscribe({
+        next: () => {
           this.multipleInputFormGroup.markAsPristine();
           this.ctx.detectChanges();
           this.isSavingInProgress = false;
@@ -680,13 +701,13 @@ export class MultipleInputWidgetComponent extends PageComponent implements OnIni
               1000, 'bottom', 'left', this.toastTargetId);
           }
         },
-        () => {
+        error: () => {
           this.isSavingInProgress = false;
           if (this.settings.showResultMessage) {
             this.ctx.showErrorToast(this.translate.instant('widgets.input-widgets.update-failed'),
               'bottom', 'left', this.toastTargetId);
           }
-        });
+        }});
     } else {
       this.multipleInputFormGroup.markAsPristine();
       this.ctx.detectChanges();
@@ -718,4 +739,31 @@ export class MultipleInputWidgetComponent extends PageComponent implements OnIni
     });
     this.multipleInputFormGroup.markAsPristine();
   }
+
+  openEditJSONDialog($event: Event, key: MultipleInputWidgetDataKey, source: MultipleInputWidgetSource) {
+    if ($event) {
+      $event.stopPropagation();
+    }
+    const formControl = this.multipleInputFormGroup.controls[key.formId];
+    this.dialog.open<JsonObjectEditDialogComponent, JsonObjectEditDialogData, object>(JsonObjectEditDialogComponent, {
+      disableClose: true,
+      panelClass: ['tb-dialog', 'tb-fullscreen-dialog'],
+      data: {
+        jsonValue: formControl.value,
+        title:  key.settings.dialogTitle,
+        saveLabel: key.settings.saveButtonLabel,
+        cancelLabel: key.settings.cancelButtonLabel
+      }
+    }).afterClosed().subscribe(
+      (res) => {
+        if (!isEqual(res, formControl.value)) {
+          formControl.patchValue(res);
+          formControl.markAsDirty();
+          if(!this.settings.showActionButtons) {
+            this.inputChanged(source, key);
+          }
+        }
+      }
+    );
+  }
 }
diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/settings/input/update-multiple-attributes-key-settings.component.html b/ui-ngx/src/app/modules/home/components/widget/lib/settings/input/update-multiple-attributes-key-settings.component.html
index 186583d5c1..3c62810000 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/settings/input/update-multiple-attributes-key-settings.component.html
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/settings/input/update-multiple-attributes-key-settings.component.html
@@ -66,6 +66,9 @@
           <mat-option [value]="'select'">
             {{ 'widgets.input-widgets.datakey-value-type-select' | translate }}
           </mat-option>
+          <mat-option [value]="'JSON'">
+            {{ 'widgets.input-widgets.datakey-value-type-json' | translate }}
+          </mat-option>
         </mat-select>
       </mat-form-field>
     </section>
@@ -179,6 +182,28 @@
       <mat-label translate>widgets.input-widgets.invalid-date-error-message</mat-label>
       <input matInput formControlName="invalidDateErrorMessage">
     </mat-form-field>
+    <mat-form-field [fxShow]="updateMultipleAttributesKeySettingsForm.get('dataKeyValueType').value === 'JSON'" fxFlex class="mat-block">
+      <mat-label translate>widgets.input-widgets.invalid-JSON-error-message</mat-label>
+      <input matInput formControlName="invalidJsonErrorMessage">
+    </mat-form-field>
+  </fieldset>
+  <fieldset [fxShow]="!updateMultipleAttributesKeySettingsForm.get('dataKeyHidden').value &&
+                      updateMultipleAttributesKeySettingsForm.get('dataKeyValueType').value === 'JSON'" class="fields-group">
+    <legend class="group-title" translate>widgets.input-widgets.dialog-editor-settings</legend>
+    <mat-form-field fxFlex class="mat-block">
+      <mat-label translate>widgets.input-widgets.title</mat-label>
+      <input matInput formControlName="dialogTitle">
+    </mat-form-field>
+    <section fxLayout="row" fxLayout.xs="column" fxLayoutGap.gt-xs="8px" fxLayoutAlign.gt-xs="start center">
+      <mat-form-field fxFlex class="mat-block">
+        <mat-label translate>widgets.input-widgets.save-button-label</mat-label>
+        <input matInput formControlName="saveButtonLabel">
+      </mat-form-field>
+      <mat-form-field fxFlex class="mat-block">
+        <mat-label translate>widgets.input-widgets.cancel-button-label</mat-label>
+        <input matInput formControlName="cancelButtonLabel">
+      </mat-form-field>
+    </section>
   </fieldset>
   <fieldset [fxShow]="!updateMultipleAttributesKeySettingsForm.get('dataKeyHidden').value" class="fields-group">
     <legend class="group-title" translate>widgets.input-widgets.icon-settings</legend>
diff --git a/ui-ngx/src/app/modules/home/components/widget/lib/settings/input/update-multiple-attributes-key-settings.component.ts b/ui-ngx/src/app/modules/home/components/widget/lib/settings/input/update-multiple-attributes-key-settings.component.ts
index 56ab12605d..7eff1bdc80 100644
--- a/ui-ngx/src/app/modules/home/components/widget/lib/settings/input/update-multiple-attributes-key-settings.component.ts
+++ b/ui-ngx/src/app/modules/home/components/widget/lib/settings/input/update-multiple-attributes-key-settings.component.ts
@@ -24,6 +24,7 @@ import {
   dataKeySelectOptionValidator
 } from '@home/components/widget/lib/settings/input/datakey-select-option.component';
 import { CdkDragDrop } from '@angular/cdk/drag-drop';
+import { MultipleInputWidgetDataKeyValueType } from '@home/components/widget/lib/multiple-input-widget.component';
 
 @Component({
   selector: 'tb-update-multiple-attributes-key-settings',
@@ -62,6 +63,11 @@ export class UpdateMultipleAttributesKeySettingsComponent extends WidgetSettings
       minValueErrorMessage: '',
       maxValueErrorMessage: '',
       invalidDateErrorMessage: '',
+      invalidJsonErrorMessage: '',
+
+      dialogTitle: '',
+      saveButtonLabel: '',
+      cancelButtonLabel: '',
 
       useCustomIcon: false,
       icon: '',
@@ -107,6 +113,13 @@ export class UpdateMultipleAttributesKeySettingsComponent extends WidgetSettings
       minValueErrorMessage: [settings.minValueErrorMessage, []],
       maxValueErrorMessage: [settings.maxValueErrorMessage, []],
       invalidDateErrorMessage: [settings.invalidDateErrorMessage, []],
+      invalidJsonErrorMessage: [settings.invalidJsonErrorMessage, []],
+
+      // Dialog settings
+
+      dialogTitle: [settings.dialogTitle, []],
+      saveButtonLabel: [settings.saveButtonLabel, []],
+      cancelButtonLabel: [settings.cancelButtonLabel, []],
 
       // Icon settings
 
@@ -130,7 +143,8 @@ export class UpdateMultipleAttributesKeySettingsComponent extends WidgetSettings
 
   protected updateValidators(emitEvent: boolean) {
     const dataKeyHidden: boolean = this.updateMultipleAttributesKeySettingsForm.get('dataKeyHidden').value;
-    const dataKeyValueType: string = this.updateMultipleAttributesKeySettingsForm.get('dataKeyValueType').value;
+    const dataKeyValueType: MultipleInputWidgetDataKeyValueType =
+      this.updateMultipleAttributesKeySettingsForm.get('dataKeyValueType').value;
     const required: boolean = this.updateMultipleAttributesKeySettingsForm.get('required').value;
     const isEditable: string = this.updateMultipleAttributesKeySettingsForm.get('isEditable').value;
     const useCustomIcon: boolean = this.updateMultipleAttributesKeySettingsForm.get('useCustomIcon').value;
@@ -165,6 +179,11 @@ export class UpdateMultipleAttributesKeySettingsComponent extends WidgetSettings
         this.updateMultipleAttributesKeySettingsForm.get('maxValueErrorMessage').enable({emitEvent: false});
       } else if (dataKeyValueType === 'dateTime' || dataKeyValueType === 'date' || dataKeyValueType === 'time') {
         this.updateMultipleAttributesKeySettingsForm.get('invalidDateErrorMessage').enable({emitEvent: false});
+      } else if (dataKeyValueType === 'JSON') {
+        this.updateMultipleAttributesKeySettingsForm.get('invalidJsonErrorMessage').enable({emitEvent: false});
+        this.updateMultipleAttributesKeySettingsForm.get('dialogTitle').enable({emitEvent: false});
+        this.updateMultipleAttributesKeySettingsForm.get('saveButtonLabel').enable({emitEvent: false});
+        this.updateMultipleAttributesKeySettingsForm.get('cancelButtonLabel').enable({emitEvent: false});
       }
       if (required) {
         this.updateMultipleAttributesKeySettingsForm.get('requiredErrorMessage').enable({emitEvent: false});
@@ -243,8 +262,9 @@ export class UpdateMultipleAttributesKeySettingsComponent extends WidgetSettings
   displayErrorMessagesSection(): boolean {
     const dataKeyHidden: boolean = this.updateMultipleAttributesKeySettingsForm.get('dataKeyHidden').value;
     const required: boolean = this.updateMultipleAttributesKeySettingsForm.get('required').value;
-    const dataKeyValueType: string = this.updateMultipleAttributesKeySettingsForm.get('dataKeyValueType').value;
-    return !dataKeyHidden && (required || (['integer', 'double', 'dateTime', 'date', 'time'].includes(dataKeyValueType)));
+    const dataKeyValueType: MultipleInputWidgetDataKeyValueType =
+      this.updateMultipleAttributesKeySettingsForm.get('dataKeyValueType').value;
+    return !dataKeyHidden && (required || (['integer', 'double', 'dateTime', 'date', 'time', 'JSON'].includes(dataKeyValueType)));
   }
 }
 
diff --git a/ui-ngx/src/app/shared/components/dialog/json-object-edit-dialog.component.html b/ui-ngx/src/app/shared/components/dialog/json-object-edit-dialog.component.html
index a4096da67c..141979d8ff 100644
--- a/ui-ngx/src/app/shared/components/dialog/json-object-edit-dialog.component.html
+++ b/ui-ngx/src/app/shared/components/dialog/json-object-edit-dialog.component.html
@@ -45,12 +45,12 @@
             type="button"
             [disabled]="(isLoading$ | async)"
             (click)="cancel()" cdkFocusInitial>
-      {{ 'action.cancel' | translate }}
+      {{ cancelButtonLabel }}
     </button>
     <button mat-button mat-raised-button color="primary"
             type="submit"
             [disabled]="(isLoading$ | async) || jsonFormGroup.invalid || !jsonFormGroup.dirty">
-      {{ 'action.save' | translate }}
+      {{ saveButtonLabel }}
     </button>
   </div>
 </form>
diff --git a/ui-ngx/src/app/shared/components/dialog/json-object-edit-dialog.component.ts b/ui-ngx/src/app/shared/components/dialog/json-object-edit-dialog.component.ts
index b1ca78b78a..e55431a327 100644
--- a/ui-ngx/src/app/shared/components/dialog/json-object-edit-dialog.component.ts
+++ b/ui-ngx/src/app/shared/components/dialog/json-object-edit-dialog.component.ts
@@ -14,18 +14,21 @@
 /// limitations under the License.
 ///
 
-import { Component, Inject, OnInit } from '@angular/core';
+import { Component, Inject } from '@angular/core';
 import { DialogComponent } from '@shared/components/dialog.component';
 import { Store } from '@ngrx/store';
 import { AppState } from '@core/core.state';
 import { Router } from '@angular/router';
 import { MAT_DIALOG_DATA, MatDialogRef } from '@angular/material/dialog';
-import { UntypedFormBuilder, UntypedFormGroup } from '@angular/forms';
+import { FormBuilder, FormGroup } from '@angular/forms';
 import { TranslateService } from '@ngx-translate/core';
+import { isNotEmptyStr } from '@core/utils';
 
 export interface JsonObjectEditDialogData {
   jsonValue: object;
   title?: string;
+  saveLabel?: string;
+  cancelLabel?: string;
 }
 
 @Component({
@@ -33,24 +36,29 @@ export interface JsonObjectEditDialogData {
   templateUrl: './json-object-edit-dialog.component.html',
   styleUrls: []
 })
-export class JsonObjectEditDialogComponent extends DialogComponent<JsonObjectEditDialogComponent, object> implements OnInit {
+export class JsonObjectEditDialogComponent extends DialogComponent<JsonObjectEditDialogComponent, object> {
 
-  jsonFormGroup: UntypedFormGroup;
-  title: string;
-
-  submitted = false;
+  jsonFormGroup: FormGroup;
+  title = this.translate.instant('details.edit-json');
+  saveButtonLabel = this.translate.instant('action.save');
+  cancelButtonLabel = this.translate.instant('action.cancel');
 
   constructor(protected store: Store<AppState>,
               protected router: Router,
               @Inject(MAT_DIALOG_DATA) public data: JsonObjectEditDialogData,
               public dialogRef: MatDialogRef<JsonObjectEditDialogComponent, object>,
-              public fb: UntypedFormBuilder,
+              public fb: FormBuilder,
               private translate: TranslateService) {
     super(store, router, dialogRef);
-  }
-
-  ngOnInit(): void {
-    this.title = this.data.title ? this.data.title : this.translate.instant('details.edit-json');
+    if (isNotEmptyStr(this.data.title)) {
+      this.title = this.data.title;
+    }
+    if (isNotEmptyStr(this.data.saveLabel)) {
+      this.saveButtonLabel = this.data.saveLabel;
+    }
+    if (isNotEmptyStr(this.data.cancelLabel)) {
+      this.cancelButtonLabel = this.data.cancelLabel;
+    }
     this.jsonFormGroup = this.fb.group({
       json: [this.data.jsonValue, []]
     });
diff --git a/ui-ngx/src/app/shared/shared.module.ts b/ui-ngx/src/app/shared/shared.module.ts
index 59003e7cf5..740b413afa 100644
--- a/ui-ngx/src/app/shared/shared.module.ts
+++ b/ui-ngx/src/app/shared/shared.module.ts
@@ -464,6 +464,7 @@ export function MarkedOptionsFactory(markedOptionsService: MarkedOptionsService)
     HtmlComponent,
     FabTriggerDirective,
     FabActionsDirective,
+    TbJsonToStringDirective,
     FabToolbarComponent,
     WidgetsBundleSelectComponent,
     ValueInputComponent,
diff --git a/ui-ngx/src/assets/locale/locale.constant-en_US.json b/ui-ngx/src/assets/locale/locale.constant-en_US.json
index 93fb935d8f..420f7ae1ef 100644
--- a/ui-ngx/src/assets/locale/locale.constant-en_US.json
+++ b/ui-ngx/src/assets/locale/locale.constant-en_US.json
@@ -4597,6 +4597,7 @@
             "datakey-value-type-string": "String",
             "datakey-value-type-double": "Double",
             "datakey-value-type-integer": "Integer",
+            "datakey-value-type-json": "JSON",
             "datakey-value-type-boolean-checkbox": "Boolean (Checkbox)",
             "datakey-value-type-boolean-switch": "Boolean (Switch)",
             "datakey-value-type-date-time": "Date & Time",
@@ -4622,7 +4623,9 @@
             "min-value-error-message": "'Min value' error message",
             "max-value-error-message": "'Max value' error message",
             "invalid-date-error-message": "'Invalid date' error message",
+            "invalid-JSON-error-message": "'Invalid JSON' error message",
             "icon-settings": "Icon settings",
+            "dialog-editor-settings": "Dialog editor settings",
             "use-custom-icon": "Use custom icon",
             "input-cell-icon": "Icon to show before input cell",
             "value-conversion-settings": "Value conversion settings",
@@ -4631,7 +4634,10 @@
             "get-value-function": "getValue function",
             "set-value-settings": "Set value settings",
             "use-set-value-function": "Use setValue function",
-            "set-value-function": "setValue function"
+            "set-value-function": "setValue function",
+            "json-invalid": "JSON value has an invalid format",
+            "title": "Title",
+            "cancel-button-label": "'Cancel' button label"
         },
         "invalid-qr-code-text": "Invalid input text for QR code. Input should have a string type",
         "qr-code": {