Sir I have one Mercidya PCO Monitar. It is not properly working. If we wish to change any data it is needed for password. But we don't know the passward. The dealer is not here now. so it is very difficult to get passward to enter. So please call or sent e-mail to Passward please. My cell no. is 9442521930 or mail to [email protected] My billing machine model is PCO Monitar which manufactured by Digila Device India Limited, North Kerala