Welcome ! Thanks for connecting to our demo site, please adjust the options as below:
Step1:open the Internet Explorer, click "Tools" in menu bar，then choose the "Internet option"

Step2:Select "Security" folder, Select "Trusted Site", then click "Site"

Step3:Input "http://www.surveillance.com.cn" in the "Trusted Site" window, Cancel the select of "all the site in this region require server verification (https)", click "add" button, put our website to trusted region.

Step4:Return to "Internet Option" page, click "Enter" button, update the page