code: def get_device_status(self, device_id, return_led=0, level=None):
          
          # status['responseCmd2'] is lighting level
          # responseCmd1 contains All-Link Database delta
          # if returnLED = 0. returns light level in responseCmd2
          # if returnLED = 1, returns LED Bit Flags in responseCmd1
  
          self.logger.info("\nget_device_status for device %s", device_id)
          device_id = device_id.upper()
          status = False
  
          if not level:
              if return_led == 1:
                  level = '01'
              else:
                  level = '00'
  
          if os.path.exists(device_id + CACHE_FILE):
              status = self.get_command_response_from_cache(device_id, '19', level)
  
          if not status:
              self.logger.info("no cached status for device %s", device_id)
              self.direct_command(device_id, '19', level)
  
              attempts = 1
              sleep(1)
  
              status = self.get_buffer_status(device_id)
              while 'success' not in status and attempts < 9:
                  status = self.get_command_response_from_cache(device_id, '19', level)
                  if not status:
                      if attempts % 3 == 0:
                          self.direct_command(device_id, '19', level)
                      else:
                          sleep(1)
                      status = self.get_buffer_status(device_id)
                  attempts += 1
          else:
              self.logger.info("got cached status for device %s", device_id)
  
          return status
docs: Do a separate query to get device status. This can tell if device
          is on/off, lighting level, etc.