Do CCTV cameras use a lot of electricity?

Related questions

1. What is the main purpose of CCTV?
2. How much does home camera cost?
3. How many times are you caught on CCTV a day?
4. How far can CCTV cameras see?
5. How much does it cost to install CCTV cameras?
6. Does a CCTV camera record sound?
7. How do CCTV cameras work at night?
8. How many surveillance cameras are in the US?
9. How many surveillance cameras are there in the world?
10. Do CCTV cameras reduce crime?

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