diff --git a/app/Models/MfmParameter.php b/app/Models/MfmParameter.php
index daee967..9ad8b15 100644
--- a/app/Models/MfmParameter.php
+++ b/app/Models/MfmParameter.php
@@ -13,6 +13,7 @@ class MfmParameter extends Model
     protected $fillable = [
         'plant_id',
         'mfm_meter_id',
+        'device_master_id',
         'name',
 		'register_id',
         'identifier',
@@ -33,4 +34,9 @@ class MfmParameter extends Model
     {
         return $this->belongsTo(MfmMeter::class, 'mfm_meter_id');
     }
+
+    public function deviceName(): BelongsTo
+    {
+        return $this->belongsTo(DeviceMaster::class, 'device_master_id');
+    }
 }