Do all CCTV cameras need power?

Related questions

1. Do I need WiFi for security cameras?
2. How do wireless cameras get power?
3. How many times are you caught on CCTV a day?
4. Is it legal to have CCTV with audio?
5. How do I know if my CCTV is on?
6. What is the main purpose of CCTV?
7. What are the disadvantages of CCTV cameras?
8. How do I know if my CCTV is working?
9. Can I put CCTV on my house?
10. How much does it cost to have CCTV installed at home?

Tags

1. #wireless
2. #powered
3. #transmit
4. #still
5. #cameras
6. #wired
7. #constantly
8. #security
9. #system
10. #models
11. #needs
12. #because
13. #wirelessly
14. #sources
15. #mains
16. #power
17. #these