| Physical Property | |
| System | Linux |
| Front Panel | Plastic |
| Power Supply | PoE (802.3af) or DC12V/2A |
| Standby Power | 1.5W |
| Rated Power | 6W |
| Wi-Fi | IEEE802.11 b/g/n,@2.4GHz (Optional) |
| Installation | Surface Mounting |
| Dimension | 184 x 100 x 28mm; 184 x 158.4 x 37.4mm (with Handset) |
| Working Temperature | -10℃ - +55℃ |
| Storage Temperature | -40℃ - +70℃ |
| Working Humidity | 10%-90% (non-condensing) |
| Audio | |
| Audio Codec | G.711 |
| Networking | |
| Protocol | SIP, UDP, TCP, RTP, RTSP, NTP, DNS, HTTP, DHCP, IPV4, ARP, ICMP |
| Port | |
| Ethernet Port | 1 x RJ45, 10/100 Mbps adaptive |
| RS485 Port | 1 |
| Power Output | 1 (12V/100mA) |
| Doorbell Input | 8 (use any alarm input port) |
| Alarm Input | 8 |
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Datasheet 904M-S3.pdfDownload
