I have 10 camera's three modules. So there not over loaded. I know you can have up to 8 cameras on one module. I have them for elderly parents and to watch the house. These stupid cameras picked up parents front door with no movement what do ever, instead of picking up person parked in front of house and in front of one of my cameras. My other system in which I only have four cameras picked up the car coming and going doing its job. Blink stinks