They are of poor quality.
Come on willo, you need a decient system in able to get any resulting prosecution should anything arise. (unless you are going to to beat them to a pulp yourself then the last statement would be irrelivant).
Please be aware that if anything does come from having a CCTV system you need signs displayed around the property in question informing the ... that you have recording systems in place.
If the signs are not displayed you can not use the evidence in court.
The man to talk to would be wheels.
Would this be to protect your lost and found departments?
Good luck on your latest quest willo, i expect an update on this.