def METHOD_NAME(self):
    """
    Retrieves current PSU voltage output
    Returns:
        A float number, the output voltage in volts,
        e.g. 12.1
    """
    vout_path = "{}{}".format(self.hwmon_path, 'psu_v_out')        
    vout_val=self._api_helper.read_txt_file(vout_path)
    if vout_val is not None:
        return float(vout_val)/ 1000
    else:
        return 0