CCTV in office

[slev1111n]

        Hi everyone! We recently opened our own office and would like to install video cameras in this office that would last a long time to track the lateness of employees, and just buy cameras as part of security, so that we can have at least some information about bad things. I would like not to spend much on this case, but at the same time, the equipment should be of high quality. Colleagues recommend trying the devices of ajax, so I would like to find out from the real owners, is it as good as it is spoken of?