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Dahua NVR `2020 41хх series Help identify Rx Tx on NVR (all 3 pins have +3.3V), ground found Probably left two are Rx Tx ?

I have Dahua 2mp IPC-HFW5231E-ZE but it cant normally work even at last firmware. it is noisy, low WDR, and cant work without IR light. IR light is very visible and not EXIR type, only round in centre it have VERY slow PLAY speed (microsd card in it 90/90 mb/s sandisk extreme ultra)...

Have camera IPC-HFW5231E-ZE V2.800.0000010.0.R, Build Date: 2019-08-07 ISPWEB V3.2.1.766334 ONVIF 16.12(V2.4.3.651299) 1) Have a problem - very slow login and other operations, long time to receive pic and other. Problem was on native and latest firmware. 2) I use IMOU Android and also DMSS...

I have outdoor using Hikvision 2Mp WiFi cam DS-2CD2020F-IW now with V5.4.5 build 170123 that recording to microSD card (only 64Gb ((( according to manual, its a too small). According to the wind&trees around i cant use motion detection func in cam (around a car), only intrusion detection in...