text: """
  Support for AlarmDecoder-based alarm control panels (Honeywell/DSC).
  
  For more details about this platform, please refer to the documentation at
  https://home-assistant.io/components/alarm_control_panel.alarmdecoder/
  """
  import asyncio
  import logging
  
  import voluptuous as vol
  
  import homeassistant.components.alarm_control_panel as alarm
  from homeassistant.components.alarmdecoder import DATA_AD, SIGNAL_PANEL_MESSAGE
  from homeassistant.const import (
      ATTR_CODE, STATE_ALARM_ARMED_AWAY, STATE_ALARM_ARMED_HOME,
      STATE_ALARM_DISARMED, STATE_ALARM_TRIGGERED)
  import homeassistant.helpers.config_validation as cv
  
  _LOGGER = logging.getLogger(__name__)
  
  DEPENDENCIES = ['alarmdecoder']
  
  SERVICE_ALARM_TOGGLE_CHIME = 'alarmdecoder_alarm_toggle_chime'
  ALARM_TOGGLE_CHIME_SCHEMA = vol.Schema({
      vol.Required(ATTR_CODE): cv.string,
  })
  
  
  def setup_platform(hass, config, add_entities, discovery_info=None):
      """Set up for AlarmDecoder alarm panels."""
      device = AlarmDecoderAlarmPanel()
      add_entities([device])
  
      def alarm_toggle_chime_handler(service):
          """Register toggle chime handler."""
          code = service.data.get(ATTR_CODE)
          device.alarm_toggle_chime(code)
  
      hass.services.register(
          alarm.DOMAIN, SERVICE_ALARM_TOGGLE_CHIME, alarm_toggle_chime_handler,
          schema=ALARM_TOGGLE_CHIME_SCHEMA)
  
  
  class AlarmDecoderAlarmPanel(alarm.AlarmControlPanel):
      """Representation of an AlarmDecoder-based alarm panel."""
  
      def __init__(self):
          """Initialize the alarm panel."""
          self._display = ""
          self._name = "Alarm Panel"
          self._state = None
          self._ac_power = None
          self._backlight_on = None
          self._battery_low = None
          self._check_zone = None
          self._chime = None
          self._entry_delay_off = None
          self._programming_mode = None
          self._ready = None
          self._zone_bypassed = None
  
      @asyncio.coroutine
      def async_added_to_hass(self):
          """Register callbacks."""
          self.hass.helpers.dispatcher.async_dispatcher_connect(
              SIGNAL_PANEL_MESSAGE, self._message_callback)
  
      def _message_callback(self, message):
          """Handle received messages."""
          if message.alarm_sounding or message.fire_alarm:
              self._state = STATE_ALARM_TRIGGERED
          elif message.armed_away:
              self._state = STATE_ALARM_ARMED_AWAY
          elif message.armed_home:
              self._state = STATE_ALARM_ARMED_HOME
          else:
              self._state = STATE_ALARM_DISARMED
  
          self._ac_power = message.ac_power
          self._backlight_on = message.backlight_on
          self._battery_low = message.battery_low
          self._check_zone = message.check_zone
          self._chime = message.chime_on
          self._entry_delay_off = message.entry_delay_off
          self._programming_mode = message.programming_mode
          self._ready = message.ready
          self._zone_bypassed = message.zone_bypassed
  
          self.schedule_update_ha_state()
  
      @property
      def name(self):
          """Return the name of the device."""
          return self._name
  
      @property
      def should_poll(self):
          """Return the polling state."""
          return False
  
      @property
      def code_format(self):
          """Return one or more digits/characters."""
          return 'Number'
  
      @property
      def state(self):
          """Return the state of the device."""
          return self._state
  
      @property
      def device_state_attributes(self):
          """Return the state attributes."""
          return {
              'ac_power': self._ac_power,
              'backlight_on': self._backlight_on,
              'battery_low': self._battery_low,
              'check_zone': self._check_zone,
              'chime': self._chime,
              'entry_delay_off': self._entry_delay_off,
              'programming_mode': self._programming_mode,
              'ready': self._ready,
              'zone_bypassed': self._zone_bypassed,
          }
  
      def alarm_disarm(self, code=None):
          """Send disarm command."""
          if code:
              self.hass.data[DATA_AD].send("{!s}1".format(code))
  
      def alarm_arm_away(self, code=None):
          """Send arm away command."""
          if code:
              self.hass.data[DATA_AD].send("{!s}2".format(code))
  
      def alarm_arm_home(self, code=None):
          """Send arm home command."""
          if code:
              self.hass.data[DATA_AD].send("{!s}3".format(code))
  
      def alarm_toggle_chime(self, code=None):
          """Send toggle chime command."""
          if code:
              self.hass.data[DATA_AD].send("{!s}9".format(code))
  