diff --git a/src/controllers/installationController.js b/src/controllers/installationController.js
index 6aeeb842..bd10eef7 100644
--- a/src/controllers/installationController.js
+++ b/src/controllers/installationController.js
@@ -1018,41 +1018,42 @@ exports.getMasterSlaveSummary = async (req, reply) => {
 
     // Update connection status and timestamps
     const updateStatusPromises = allDevices.map(async device => {
-      let checkHardwareId = device.hardwareId?.trim();
-      if (!checkHardwareId) return;
-
-      // For slave, check connection via master's hardwareId (i.e., connected_to)
-      if (device.type === 'slave') {
-        checkHardwareId = device.connected_to?.trim();
-        if (!checkHardwareId) return;
+      let checkHardwareId;
+    
+      if (device.type === 'master') {
+        checkHardwareId = device.hardwareId?.trim();
+      } else if (device.type === 'slave') {
+        checkHardwareId = device.hardwareId?.trim(); // Use slave's own hardwareId
       }
-
+    
+      if (!checkHardwareId) return;
+    
       const latestData = await IotData.findOne({ hardwareId: checkHardwareId })
         .sort({ date: -1 })
         .lean();
-
+    
       let status = "disconnected";
-      let updateFields = {};
-
+      const updateFields = {};
+    
       if (latestData?.date) {
         const now = moment();
         const lastSeen = moment(latestData.date);
         const diff = now.diff(lastSeen, 'minutes');
-
+    
         if (diff <= 10) {
           status = "connected";
-
+    
           const indiaTime = moment.tz(latestData.date, "Asia/Kolkata");
           const date = indiaTime.format("YYYY-MM-DD");
           const time = indiaTime.format("HH:mm:ss");
-
+    
           if (device.type === 'master') {
             updateFields.connected_gsm_date = date;
             updateFields.connected_gsm_time = time;
             device.connected_gsm_date = date;
             device.connected_gsm_time = time;
           }
-
+    
           if (device.type === 'slave') {
             updateFields.connected_lora_date = date;
             updateFields.connected_lora_time = time;
@@ -1061,11 +1062,13 @@ exports.getMasterSlaveSummary = async (req, reply) => {
           }
         }
       }
-
+    
       updateFields.connected_status = status;
       await Insensors.updateOne({ _id: device._id }, { $set: updateFields });
       device.connected_status = status;
     });
+    
+    
 
     await Promise.all(updateStatusPromises);