1. 280D-A1 is a SIP intercom with a numeric keypad and built-in card reader.
2. Integration with elevator control system brings more convenience to life and increases the security of the building.
3. The door can be unlocked by password or IC card.
4. 20,000 IC cards can be identified on the outdoor panel for door access control.
5. When equipped with one optional unlocking module, two relay outputs can be used to control two locks.
| Physical Property | |
| System | Linux |
| CPU | 1GHz，ARM Cortex-A7 |
| SDRAM | 64M DDR2 |
| Flash | 128MB |
| Screen | 4.3 inch LCD,480x272 |
| Power | DC12V |
| Standby power | 1.5W |
| Rated Power | 9W |
| Card Reader | IC/ID(Optional) Card, 20,000 pcs |
| Button | Mechanical Button |
| Temperature | -40℃ - +70℃ |
| Humidity | 20%-93% |
| IP Class | IP55 |
| Audio & Video | |
| Audio Codec | G.711 |
| Video Codec | H.264 |
| Camera | CMOS 2M pixel |
| Video Resolution | 1280×720p |
| LED Night Vision | Yes |
| Network | |
| Ethernet | 10M/100Mbps, RJ-45 |
| Protocol | TCP/IP, SIP |
| Interface | |
| Unlock circuit | Yes(maximum 3.5A current) |
| Exit Button | Yes |
| RS485 | Yes |
| Door Magnetic | Yes |
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Datasheet 280D-A1.pdfDownload
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Datasheet 904M-S3.pdfDownload
