hello. friend
firstly, please check if your client computer connected with Internet,
secondly, please check the security level of your IE browser, if the security level is too high and blocked the ActiveX, it will show no image at all
by the way, we are manufacturer and exporter of DVR stand alone , cftv mini camera and ip cameras from China, we are looking for distributors and importers in Brazil,
kindly check our DVR and camera catalogs and price list in attachment
Att.
Jack Gui
Midwec INdustry Co.,LTD
http://www.midwec.com