diff --git a/ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-profile-transport-configuration.component.html b/ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-profile-transport-configuration.component.html
index 36dea4c42b..3d4030cc0e 100644
--- a/ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-profile-transport-configuration.component.html
+++ b/ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-profile-transport-configuration.component.html
@@ -21,13 +21,18 @@
       <ng-template matTabContent>
         <section [formGroup]="lwm2mDeviceProfileFormGroup">
           <div class="mat-padding" style="padding-bottom: 0px">
-            <mat-checkbox formControlName="clientOnlyObserveAfterConnect" color="primary"
+            <mat-form-field class="mat-block">
+              <mat-label>{{ 'device-profile.lwm2m.client-only-observe-after-connect-label' | translate }}</mat-label>
+              <mat-select formControlName="clientOnlyObserveAfterConnect"
                           matTooltip="{{ 'device-profile.lwm2m.client-only-observe-after-connect-tip' | translate:
                           { count: +lwm2mDeviceProfileFormGroup.get('clientOnlyObserveAfterConnect').value } }}"
                           matTooltipPosition="above">
-              {{ 'device-profile.lwm2m.client-only-observe-after-connect' | translate:
-              {count: +lwm2mDeviceProfileFormGroup.get('clientOnlyObserveAfterConnect').value} }}
-            </mat-checkbox>
+                <mat-option value=1>{{ 'device-profile.lwm2m.client-only-observe-after-connect' | translate:
+                  {count: 1} }}</mat-option>
+                <mat-option value=2>{{ 'device-profile.lwm2m.client-only-observe-after-connect' | translate:
+                  {count: 2} }}</mat-option>
+              </mat-select>
+            </mat-form-field>
           </div>
           <div class="mat-padding" style="padding-top: 0">
             <tb-profile-lwm2m-object-list
diff --git a/ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-profile-transport-configuration.component.ts b/ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-profile-transport-configuration.component.ts
index b8130f2702..6048c1f944 100644
--- a/ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-profile-transport-configuration.component.ts
+++ b/ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-profile-transport-configuration.component.ts
@@ -77,7 +77,7 @@ export class Lwm2mDeviceProfileTransportConfigurationComponent implements Contro
               private deviceProfileService: DeviceProfileService,
               @Inject(WINDOW) private window: Window) {
     this.lwm2mDeviceProfileFormGroup = this.fb.group({
-      clientOnlyObserveAfterConnect: [true, []],
+      clientOnlyObserveAfterConnect: [1, []],
       objectIds: [null, Validators.required],
       observeAttrTelemetry: [null, Validators.required],
       shortId: [null, Validators.required],
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 329c472bb4..4c5a764171 100644
--- a/ui-ngx/src/assets/locale/locale.constant-en_US.json
+++ b/ui-ngx/src/assets/locale/locale.constant-en_US.json
@@ -1108,7 +1108,8 @@
         "schedule-time-to": "To",
         "schedule-days-of-week-required": "At least one day of week should be selected.",
         "lwm2m": {
-            "client-only-observe-after-connect": "{ count, plural, 1 {Strategy 1: Only Observe Request to the client after the initial connection} other {Strategy 2: Read All Resources & Observe Request to the client after registration} }",
+            "client-only-observe-after-connect-label": "Strategy",
+            "client-only-observe-after-connect": "{ count, plural, 1 {1: Only Observe Request to the client after the initial connection} other {2: Read All Resources & Observe Request to the client after registration} }",
             "client-only-observe-after-connect-tip": "{ count, plural, 1 {Strategy 1: After the initial connection of the LWM2M Client, the server sends Observe resources Request to the client, those resources that are marked as observation in the Device profile and which exist on the LWM2M client.} other {Strategy  2: After the registration, request the client to read all the resource values for all objects that the LWM2M client has,\n then execute:  the server sends Observe resources Request to the client, those resources that are marked as observation in the Device profile and which exist on the LWM2M client.} }",
             "object-list": "Object list",
             "object-list-empty": "No objects selected.",