The TRB256 is an industrial 4G LTE NB-IoT gateway designed to be applied to a broad range of IoT solutions. The device is equipped with multiple WAN interfaces, such as I/Os, RS232, RS485, and an Ethernet port, additionally boasting dual SIM functionality for continuous connectivity. This industrial-grade gateway also supports the 450 MHz frequency band, offering superior LTE signal penetration compared to standard frequencies, making it an optimal choice for a diverse range of M2M applications. More information: Management features | Web-based management | Yes | ![](/p.gif) | Quality of Service (QoS) support | Yes | ![](/p.gif) | Universal Plug and Play (UPnP) | Yes | ![](/p.gif) | Reset button | Yes | Protocols | Management protocols | WEB UI, FOTA, SSH, SMS, Call, TR-069, MQTT, SNMP, JSON-RPC, RMS | ![](/p.gif) | Supported network protocols | TCP, UDP, IPv4, IPv6, ICMP, NTP, DNS, HTTP, HTTPS, SFTP, FTP, SMTP, SSL/TLS, ARP, VRRP, PPP, PPPoE, UPNP, SSH, DHCP, Telnet, SMPP, SNMP, MQTT, Wake On Lan (WOL) | ![](/p.gif) | DMZ support | Yes | Features | Antenna type | External | ![](/p.gif) | Antenna connector type | R-SMA | Operational conditions | Operating temperature (T-T) | -40 - 75 °C | ![](/p.gif) | Operating relative humidity (H-H) | 10 - 90 % | Design | Product colour | Black | ![](/p.gif) | Enclosure material | Aluminium | ![](/p.gif) | International Protection (IP) code | IP30 | ![](/p.gif) | Safety | CE: EN IEC 62368-1:2020 + A11:2020, EN IEC 62311:2020 RCM: AS/NZS 62368.1:2022 CB: IEC 62368-1:2018 | Network | Ethernet LAN data rates | 10,100 Mbit/s | ![](/p.gif) | Networking standards | IEEE 802.3, IEEE 802.3az, IEEE 802.3u | ![](/p.gif) | Dynamic DNS (DDNS) | Yes | Weight & dimensions | Width | 83 mm | ![](/p.gif) | Depth | 74.2 mm | ![](/p.gif) | Height | 25 mm | ![](/p.gif) | Weight | 165 g | Power | DC input voltage | 9 - 30 V | Security | Firewall security | Yes | ![](/p.gif) | Authentication method | Pre-shared key, digital certificates, X.509 certificates, TACACS+, Radius, IP & Login attempts block | ![](/p.gif) | DoS attack prevention | Yes | ![](/p.gif) | Network address translation (NAT) | Yes | Ports & interfaces | RS-232 ports | 1 | ![](/p.gif) | SIM card slot | Yes | ![](/p.gif) | SIM card type | MiniSIM | ![](/p.gif) | Number of simultaneous SIM cards | 2 | ![](/p.gif) | Ethernet LAN (RJ-45) ports | 1 | ![](/p.gif) | WAN connection | Ethernet (RJ-45) | ![](/p.gif) | Serial interface type | RS-232, RS-485 |
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