TTD Board Chairman K Bapiraju said the board at its monthly meeting resolved to buy the cameras to boost the security apparatus.
The cameras would be installed at several places on the hills, including inside the shrine.
These would also be erected at various vulnerable places in Tirupati and nearby Tiruchanur, he said.
Technology major HCL has come forward to extend technological support free of cost in the functioning of the surveillance cameras, he said.
