Same as all other electronic devices, IP cameras need power. IP camera is known as network camera. So the network is required for communicating. Power over Ethernet allows power and network transmit over single Ethernet cable.
Without DVRs or NVRs, IP cameras can still work independently as standalone surveillance devices, just like the security cameras with SD card. Better yet, you can also connect an IP camera to your phone, computer, laptop, TV without a DVR/NVR to stream live feed.
However, as a general rule, a new IP camera today should last two NVR cycles. So, if an NVR lasts between three to five years that means the IP camera on the network should last between six to 10 years.
IP cameras can send digital video 100 metres over twisted-pair Ethernet cable and unlimited distances over IP networks. Because the images are digital, they maintain 100% of their clarity over long distances and when the signal is converted between different formats.
When you use a smart TV, you face the same security and privacy risks as with any device connected to the internet. Your smart TV's built-in camera and microphone, originally included for voice and facial recognition features, can be accessed by hackers and used to spy on you.