They can be made to work off your TV but as any computer, smart phone or tablet can be used to access and view the cameras none of our customers have found this necessary. This means that unlike older systems you are not tied to just one fixed monitor or television. You can take your the device you are using anywhere in the house with you, so you could monitor your livestock whilst having your dinner, having a bath or even in bed! That said we can still provide a fixed monitor if that is required.