Tested and confirmed working. Two units. These are network cameras. If you are not familiar with them and cannot connect them, I will not be able to help as I do not know your environment. I would prefer buyers who have experience setting these up. I have confirmed they work with the recorder I am selling. I have multiple units in stock. If you want more than two, please comment. Please initialize them before use. These are network cameras. Please purchase only if you have the knowledge to set them up.