def send_alert(self, message):
        """
        Send an SMS alert
        :param message: str, Content of SMS message
        :return response: str, Response to sendsms command
        """
        message = "{0}: {1}".format(self.custom_text, message)
        command = 'sendsms ' + self.destination + ' "' + message + '" '
        response = cli_command(command)
        return response