| Model Name | KD-HD4B-G4WF | |
| System | Language | Chinese English |
| Operation interface | OSD menu | |
| Password security | User password and Administrator password | |
| Audio & Audio | Video input | 4CH aviation connector |
| Video output | 1CH AV out + 1CH I/O port + 1CH aviation connector(VGA/BNC) | |
| Video display | 1ch full screen/4ch split screen | |
| Signal system | PAL: 100 fps, CCIR 625tvl, 50 field NTSC: 120 fps, CCIR 525tvl, 60 field |
|
| Image compression | H.264 Main profile | |
| Audio input | 4CH aviation connector | |
| Audio output | 2CH AV out port | |
| Compression format | G.726 | |
| Recording & Storage | Image resoluation | 4*AHD(720P) or 4*Analog(960H/D1/HD1/CIF) |
| Video coding | ISO14496-10 | |
| Video bit rate |
CIF: 256Kbps~1.5Mbps, multilevel image quality optional, HD1: 600Kbps~2.5Mbps, multilevel image quality optional, D1: 800Kbps~3Mbps, multilevel image quality optional, 720P: 1000Kbps~6Mbps, multilevel image quality optional, 8 video quality grades, highest grade 1 and lowest grade 8 |
|
| Audio bit rate | 5KB/s | |
| Storage | 2 SD card slots, each max support 256GB, loop recording, auto data overwrite | |
| Communication ports | RS232 | 1*RS232 |
| RS485 | 1*RS485 | |
| RJ45 network | NO | |
| USB | 1 | |
| SIM card slot | 1 SIM card slot | |
| Wireless communication | 3G | Built-in 3G module optional(WCDMA/EVDO/TD-SCDMA) |
| 4G | Built-in 4G module optional(TD-LTE/FDD-LTE) | |
| Wifi | Built-in Wifi optional(2.4G/5.8G) | |
| GPS | Built-in GPS module optional, realtime geographic coordinates, speed information | |