In case you get camera with red tint in day mode read below before you decide to return the product.
Problem is caused by red filter not being rertacted. Filter is controled mechanically and you can hear a click when it is toggling.
I could only hear the click when filter was engaging i.e. camera shifting into night mode.
I decided to open camera to investigate and I quickly found that the problem was that black wire going to filter case was shorted to ground during assembly. Insulation was pinched by one of metal posts and pcb. Reverse voltage must be applied to retract the filter …
After I insulated the wire camera started clicking during transition both ways.
Saved me some downtime and need to haul my bottom to the store…