Dahua IPC-HDW5442T-ZE 4MP Varifocal Turret - Night Perfomance testing

Sorry if this is an already answered question, but can these varifocal cameras zoom-in when motion is triggered via IVS, or is the variable zoom just to adjust the picture while installing/setting up?
 
Hello guys,
Is there alternatives for this camera with good sensor right now or it is still actual model?