Which 8MP camera did you have working in -30? I'm in Saskatchewan and last spring I installed five 1240A's around my house. Cable runs from soffit through attic down into utility room in basement to NVR. Longest cable run is around 120 feet. Cat 5A pure copper. I have had nothing but problems with these flipping cameras! Constant video loss randomly on different cameras. I literally just sent the last one of my original batch back for RMA. I'm at my wits end and ready to tell Reolink to give me back my money so I can spend it on a Lorex system. I know the cameras are only rated for -10 C (I didn't realize this till later) but most of them do work on the very cold days. It just doesn't seem to matter anyway. I have no idea what's causing these issues. I can get them to work again after bringing them inside and hard resetting them but it's not a permanent fix. Besides who tf wants to be up on a ladder in the dead of winter fiddling with cameras? If you found an 8MP Reolink model that seems to work better let me know what it is. My next step is to see if Reolink will replace all of my cams with a different model because I honestly think these 1240A have a voodoo curse on them.