diff --git a/app/services/modbus/polling_service.rb b/app/services/modbus/polling_service.rb
index 6a3d7db..3083672 100644
--- a/app/services/modbus/polling_service.rb
+++ b/app/services/modbus/polling_service.rb
@@ -22,22 +22,31 @@ module Modbus
       private
       def apply_schedule(schedule)
         if schedule.is_active
-          run_script("on_off.rb", "#{schedule.controller.station_id}", "0", "[Schedule] #{schedule.controller.name} ON")
+          run_script(
+            "power",
+            "#{schedule.controller.station_id}",
+            "0",
+            "[Schedule] #{schedule.controller.name} ON"
+          )
           sleep 2
           run_script(
-            "serial.rb",
+            "temp",
             "#{schedule.controller.station_id}",
             (schedule.temperature * 10).to_i.to_s,
             "[Schedule] #{schedule.controller.name} #{format('%02d:%02d', schedule.hour, schedule.minute)} → #{schedule.temperature}°C"
           )
         else
-          run_script("on_off.rb", "#{schedule.controller.station_id}", "1", "[Schedule] #{schedule.controller.name} OFF")
+          run_script(
+            "power",
+            "#{schedule.controller.station_id}",
+            "1",
+            "[Schedule] #{schedule.controller.name} OFF"
+          )
         end
       end
 
-      def run_script(file, controller_id, value, success_msg)
-        path = Rails.root.join(file)
-        if system("ruby", path.to_s, controller_id, value)
+      def run_script(mode, controller_id, value, success_msg)
+        if system("ruby", "modbus.rb", mode, controller_id, value)
           puts success_msg
           Rails.logger.info success_msg
         else
diff --git a/modbus.rb b/modbus.rb
new file mode 100644
index 0000000..a4ff827
--- /dev/null
+++ b/modbus.rb
@@ -0,0 +1,21 @@
+require "rmodbus"
+require "ccutrer-serialport"
+
+mode = ARGV[0].strip
+controller_id = ARGV[1].to_i
+value = ARGV[2].to_i
+
+ModBus::RTUClient.new("/dev/ttyUSB0", 9600) do |cl|
+  cl.with_slave(controller_id) do |slave|
+    regs = slave.holding_registers
+    case mode
+    when "temp"
+      regs[2] = value
+    when "power"
+      regs[22] = value
+    else
+      # type code here
+    end
+    sleep 0.1
+  end
+end
diff --git a/on_off.rb b/on_off.rb
deleted file mode 100644
index 998757f..0000000
--- a/on_off.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-require "rmodbus"
-require "ccutrer-serialport"
-
-controller_id = ARGV[0]&.to_i
-value = ARGV[1]&.to_i
-
-ModBus::RTUClient.new("/dev/ttyUSB0", 9600) do |cl|
-  cl.with_slave(controller_id) do |slave|
-    regs = slave.holding_registers
-    regs[22] = value
-    sleep 0.1
-  end
-end
diff --git a/serial.rb b/serial.rb
deleted file mode 100644
index dd9d4a9..0000000
--- a/serial.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-require "rmodbus"
-require "ccutrer-serialport"
-
-controller_id = ARGV[0]&.to_i
-value = ARGV[1]&.to_i
-
-ModBus::RTUClient.new("/dev/ttyUSB0", 9600) do |cl|
-  cl.with_slave(controller_id) do |slave|
-    regs = slave.holding_registers
-    regs[2] = value
-    sleep 0.1
-  end
-end