Hikvision DS-7716NXI-I4/16P/S NVR AcuSense, 16 channel 4K recorder, up to 12mp, 4x SATA, 16x PoE
For your information: Recorders have fans on board that cool the processor, these make noise!
This is about 60Db we advise not to place the recorder in the house but to hide it in a meter cupboard.
The AcuSense NVR is a powerful recorder suitable for resolutions up to 12MP. The recorder is equipped with AcuSense technology. AcuSense is an advanced algorithm that is capable of recognizing vehicles and persons, allowing for very accurate detection. This intelligent functionality can be applied to up to 4 cameras with a maximum resolution of 4MP. Because the intelligence is in the recorder, AcuSense technology can be applied with normal cameras.