| Physical Property | |
| System | Linux |
| CPU | 1GHz，ARM Cortex-A7 |
| SDRAM | 128MB |
| Flash | 64M DDR2 |
| Product Size | 145x92x25(mm) |
| Power | DC12V |
| Standby power | 1.5W |
| Rated Power | 3W |
| RFID Card Reader | IC/ID (Optional), 20,000 pcs |
| Button | Touch |
| Temperature | -40℃ - +70℃ |
| Humidity | 20%-93% |
| Audio & Video | |
| Audio Codec | G.711 |
| Video Codec | H.264 |
| Camera | CMOS 2M Pixel（optional） |
| Video Resolution | 1280×720p |
| LED Night Vision | Yes |
| Network | |
| Ethernet | 10M/100Mbps, RJ-45 |
| Protocol | TCP/IP, SIP |
| Interface | |
| Unlock circuit | Yes (Withstand max current 1A for lock) |
| Exit Button | Yes |
| RS485 | Yes |
| Door Magnetic | Yes |
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Datasheet 904M-S3.pdfDownload
