| USR-DR404 | |
| Port Number | 1x Ethernet Ports: 1x WAN/LAN | 
| Buffer | RX/TX: Max 4K bytes | 
| Protection | 2KV Electromagnetic isolation for Ethernet port | 
| Speed Rate | 10/100 Mb/s, MDI/MDIX | 
| Wi-Fi | |
| Certificate | FCC/CE | 
| WiFi | 802.11 b/g/n | 
| FrequencyRange | 2.412GHz-2.484GHz | 
| TransmitPower | 802.11b: +19dBm(Max.@11Mbps) 802.11g: +18dBm(Max.@54Mbps) 802.11n: +17dBm(Max.@HT20,MCS7) +17dBm(Max.@HT40,MCS7) | 
| User can configure power | |
| ReceiveSensitivity | 802.11b: -89dBm(@11Mbps) 802.11g: -81dBm(@54Mbps) 802.11n: -73dBm(@HT20,MCS7) -71dBm(@HT40,MCS7) | 
| Hardware | |
| InterfaceStandard | RS485:300~230.4Kbps | 
| 485 interface (anti surge, anti thunder, overcurrent protection) | |
| Input Voltage | DC5~36V | 
| Operating Temp | -40℃~85℃ | 
| StorageTemp | -40℃~125℃ | 
| Size | 109.66 x 28 x 64.71 mm | 
| Software | |
| Network Mode | Station/AP/AP+Station | 
| Security  | WPA-PSK/WPA2-PSK | 
| Encryption | TKIP/AES | 
| Work Mode | Transparent transmission/Serial command/ https Client/Modbus TCP<=>Modbus RTU | 
| SettingCommand | AT+ command | 
| Networking Protocol | TCP/UDP/ARP/ICMP/DHCP/DNS/https | 
| Max Client Numberin TCP Server Mode | 24 | 
| Configuration | Web server+AT command | 
| Customer application software | Support customize application software |