For any technical questions / requests related to DVRs and analogue cameras, please consult with your local distributors, resellers or installers who sell the products to you first. They are truly the ones who can provide the most instant checking and servicing to you in your language. This email support shall be your secondary help contact and we'll try our best to reply you ASAP. Below are some answers to the most frequently-asked questions. Please check before submitting your question, and we might not answer your question relating the items below. Sorry for the inconveniences.