lens control without open the housing–CCTV camera

New tech—-Adjust the lens by software or keyboard without open the houding ,for example if you already installed the housing camera , then if need adjust the lens , usually we need go there and open the housing and adjust the lens , if like that , it is not convenience , and usually the environment is not safe , so our this new tech is , we can adjust by software
for example you can through your DVR software or keyboard in the controlroom,no need to go and open the case to adjust

for PTZ camera , it no need adjust , as it already can control by dvr or keyboard

and now i am talking one is the housing camera that use the varifocal lens , such as 2.8-12mm .
for example if we default setting is 2.8mm lens , but after installed we need adjust to 6mm ,then we can throught software to adjust it

Actually,back to Explosion proof camera,we also can do the solution with 1080P and lens control.