I have two small supermarkets. How should I install the camera? How many should I install? Can I view it online or remotely?

The specific installation mainly depends on the points you want to monitor, such as the aisle between shelves, how many meters, choose cameras with different lenses, generally use guns at the cashier, and generally install one at the outdoor door. If there are no more than eight cameras in your two supermarkets, you can use an eight-way hard disk video recorder or acquisition card. The acquisition card should be used in conjunction with the computer. If you want to record from morning till night, I suggest adding some money to use a video recorder. You only need to buy a video recorder and an acquisition card with network function to browse the network, and you can monitor it remotely. Another kind of remote monitoring is to use network cameras. It's not cost-effective to spend a little more if you don't pack much. Or you can add QQ: 869356998 to introduce it in detail and give you a plan. There is nothing to say about the quality of the camera. Sony original chip, the manufacturer guarantees fake compensation, hehe.