... 1536Kbps ~ 128Kbps,Eight classes quality options, one class is high quality, 8 class is lowestHD1: 2048Kbps ~ 380Kbps,Eight classes quality options, ... one class is highest quality, 8 class is lowest.D1: 2048Kbps ~ 400Kbps,Eight classes quality ... below 4V is low level alarm,4V above is high level alarmAlarm output2pcs alarm output,the output level is ...