Does CCTV work without electricity?

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Tags

1. #since
2. #communicate
3. #remotely
4. #devices
5. #recorder
6. #power
7. #transmit
8. #phone
9. #access
10. #understand
11. #electricity
12. #network
13. #without
14. #monitoring
15. #router
16. #electric
17. #system