> 5MP, 1/2.7” CMOS image sensor,low illuminance, high image definition

> Outputs 2688×1520 (2688×1520) @ 25/30 fps, and supports max. 5MP (2592×1944) @ 20 fps

> H.265 codec, high compression rate, ultra-low bit rate

> Built-in IR LED, max IR distance: 40 m

> ROI, SMART H.264/H.265, flexible coding, applicable to various bandwidth and storage environments

> Rotation mode, WDR, 3D DNR, HLC, BLC, digital watermarking, applicable to various monitoring scenes

> Intelligent detection: Intrusion, tripwire

> Abnormality detection: Motion detection, video tampering, no SD card, SD card full, SD card error, network disconnected, IP conflict, illegal access, voltage detection

> Supports max. 256 GB Micro SD card

> 12V DC/PoE power support

> IP67 protection

downloads 

https://www.dahuasecurity.com/asset/upload/uploads/soft/20191023/DH-IPC-HDW2531T-ZS-S2.pdf

https://www.dahuasecurity.com/asset/upload/uploads/soft/20190926/1.2.51.32.15227-000-Dahua-Eyeball-Network-Camera_QSG_V1.0.0.pdf