Our company has an older Speco N8JWN NVR. We currently have 6 cameras and would like to add up to the max of 8. The cameras we are using now are O2WK1N. They have apparently been discontinued and I have not been able to find any for sale. I found two used O2WK1 (no N at the end) but they will not pair with the N8JWN. I contacted Speco and they said the N8JWN requires the O2WK1N. I just wanted to check here to see if anyone has had any luck pairing another camera besides the O2WK1N with the N8JWN? Thanks in advance.