diff --git a/app/assets/stylesheets/application.tailwind.css b/app/assets/stylesheets/application.tailwind.css
index 2bec063..4960433 100644
--- a/app/assets/stylesheets/application.tailwind.css
+++ b/app/assets/stylesheets/application.tailwind.css
@@ -89,7 +89,7 @@
     }
 
     .select-style {
-        @apply block w-full px-2 py-1.5 border border-default-slate/50 rounded-xs text-base-background
+        @apply block w-full px-2 py-1.5 border border-default-slate/50 rounded-xs text-base-background appearance-none
     }
 
     .select-style option {
diff --git a/app/views/schedules/schedule_edit.html.erb b/app/views/schedules/schedule_edit.html.erb
index 1c1bd62..3b1afac 100644
--- a/app/views/schedules/schedule_edit.html.erb
+++ b/app/views/schedules/schedule_edit.html.erb
@@ -18,11 +18,11 @@
                     <div class="text-xl flex items-center space-x-1 w-full h-full">
                       <%= select_tag "schedule[#{s.id}][hour]",
                                      options_for_select((0..23).map { |h| [h.to_s.rjust(2, '0'), h] }, s.hour),
-                                     class: "select-style text-white min-w-[60px] h-full" %>
+                                     class: "select-style text-white min-w-[60px]" %>
                       <div>:</div>
                       <%= number_field_tag "schedule[#{s.id}][minute]",
                                            s.minute, min: 0, max: 59, step: 1, inputmode: "decimal",
-                                           class: "input-style min-w-[60px] h-full" %>
+                                           class: "input-style min-w-[60px]" %>
                     </div>
                   </div>
 
diff --git a/modbus.rb b/modbus.rb
index 0ef6e52..77c989b 100644
--- a/modbus.rb
+++ b/modbus.rb
@@ -22,13 +22,13 @@ begin
     end
   end
 rescue
-  # error_message = "[#{Time.now}] #{mode} 실행 실패 (station_id: #{controller_id}, value: #{value})"
-  # res = Sms.send_one(
-  #   {
-  #     to:   '01062619801',
-  #     from: '01062619801',
-  #     text: error_message
-  #   }
-  # )
-  # puts res
+  error_message = "[#{Time.now}] #{mode} 실행 실패 (station_id: #{controller_id}, value: #{value})"
+  res = Sms.send_one(
+    {
+      to:   '01062619801',
+      from: '01062619801',
+      text: error_message
+    }
+  )
+  puts res
 end