Which is the proper OS fo URIEL-DVR system?      Does URIEL-DVR system support multi-language?      Does URIEL-DVR system have the partial zoom..      Does URIEL-DVR system have the snapshot function..      How can the user check the sensor or realy output status?      Does the URIEL-DVR system support the display ..      how can the user search the data recorded as a specific ..      How can the user search the events occurred in ..