Hello there from Venezuela,
I think you need to ask for their customer service support to be able to find out which one is better or reliable when installing.
Wow, I never knew something like that exist. Well, we are now in a developing world, so why even wonder. Will have a search on that sometime. It excites me.
When installing a CCTV system, you need a plan and you need to understand the technology. It’s always a good idea to consult a professional who has the skills and experience to do this properly.
Surveillance cameras and CCTV systems vary in features and functionalities. I would start researching before you buy anything and make sure you understand the different technologies and options such as IP, analog, components and accessories.