1. This indoor unit can be used in an apartment or multi-unit buildings, where a loud-speaking (open-voice) type of apartment door phone is desired.
2. Two mechnical buttons are used for calling/answering and unlocking the door.
3. Max. 4 alarm zones, such as fire detector, gas detector, or door sensor etc., can be connected to ensure home security.
4. It is compact, low cost and convenient to use.
| Physical Property | |
| System | Linux |
| CPU | 1GHz,ARM Cortex-A7 |
| Memory | 64MB DDR2 SDRAM |
| Flash | 16MB NAND FLASH |
| Device Size | 85.6*85.6*49（mm） |
| Installation | 86*86 box |
| Power | DC12V |
| Standby power | 1.5W |
| Rated Power | 9W |
| Temperature | -10℃ - +55℃ |
| Humidity | 20%-85% |
| Audio & Video | |
| Audio Codec | G.711 |
| Screen | No Screen |
| Camera | No |
| Network | |
| Ethernet | 10M/100Mbps, RJ-45 |
| Protocol | TCP/IP, SIP |
| Features | |
| Alarm | Yes(4 zones) |
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Datasheet 904M-S3.pdfDownload
