Hi a relative is looking for a low cost CCTV system. They would like a phone app to allow remote viewing. Cameras front and back. But they don’t leave their broadband on all the time. Broadband issues can arise in their area etc. They would also like around 2 weeks of HD colour images stored in case something happens on holiday. Any suggestions or idea of costs. I’m not sure about specs I should be looking for. Trying to help as they are elderly and living in a rural area.