Hi sifu-sifu sekalian

I would like to ask for some recommendations for CCTV solutions for my house which is currently empty, but forgot to include planning for concealed cabling during renovation previously

Therefore I am looking for options that can have wireless cameras but local recording to an NVR (not recording to microSD within the camera like TP-Link TAPO cameras, due to concern that records may be lost if thief steals the camera itself)

are there any viable options locally? I've seen on taobao that there are dahua NVRs that can record from wireless cameras (DH-NVR1108HS-W-HDS2).
Will buying these NVRs and/or wireless cameras from China work in Malaysia considering our electricity supply is different

wifi coverage so far is still ok. so far the contractor quoted me surface cabling, so there will be a casing visible, if possible i want to minimize that

thanks! this looks like exactly what I need