diff --git a/src/models/store.js b/src/models/store.js
index 90df39a5..04b2633f 100644
--- a/src/models/store.js
+++ b/src/models/store.js
@@ -250,7 +250,7 @@ const motorSwitchSensorInSchema = new mongoose.Schema({
 
 const insensorsSchema = new mongoose.Schema({
   storeId: { type: String },
-  hardwareId: { type: String },
+  hardwareId: { type: String ,default:null},
   masterId: { type: String, default: null },
   type: { type: String },
   model: { type: String },