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UCR-ST-B8-AT Unitronics Unitronics Router B8 USA AT&T
MPN: UCR-ST-B8-AT
Alt. SKU: UCRSTB8AT

Why Choose the Unitronics UCR-ST-B8-AT 4G LTE Industrial Router?
The Unitronics UCRâSTâB8âAT is a rugged, dualâSIM 4G LTE Catâ¯4 router certified for deployment in North America (USA & Canada). Engineered for industrial automation and remote PLC connectivity, it delivers up to 150â¯Mbps download and supports essential IIoT protocols such as Modbus TCP/RTU, MQTT, VPN and dynamic DNS. Its interfaces include 4à 10/100 Ethernet ports (configurable WAN/LAN), serial ports (RSâ232, RSâ485), GNSS, USB and digital/analog I/O. With CE certification and compatibility with Unitronics UniCloud, it's ideal for robust SCADA, telemetry, and remote control applications across critical infrastructure in AT&T LTE regions.
Key Features
- LTE Bands Optimised for AT&T â 4G (B2, B4, B12), 3G (B2, B4, B5)
- DualâSIM LTE Catâ¯4 modem â up to 150â¯Mbps down / 50â¯Mbps up
- 4 Ethernet ports (1Ã WAN or LAN, passive PoE on LAN1)
- Serial connectivity: RSâ232, RSâ485, USB 2.0, microâSD slot
- Digital & analog I/O: for remote monitoring and control
- GNSS (GPS) built-in for geoâfencing and location telemetry
- IIoT & security protocols: Modbus, MQTT, VPN, NTP, firewall
- Industrial-grade temperature range: â40â¯Â°C to +75â¯Â°C
Frequently Asked Questions
- Which LTE bands are supported for AT&T?
- Does this router support passive PoE?
- Is it compatible with UniCloud and Unitronics PLCs?
- What physical interfaces does it include?
- Can it operate in extreme temperatures?
Technical Specifications
- Model: UCRâSTâB8âAT
- Cellular: LTE Catâ¯4, DCâHSPA+, UMTS, EDGE, GPRS
- LTE Bands: B2 (1900), B4 (AWSâ1), B12 (700 MHz)
- UMTS Bands: B2, B4, B5
- Ethernet: 4Ã RJ45 10/100 Mbps (WAN/LAN configurable)
- Passive PoE: Supported on LAN1 (nonâIEEE standard)
- Serial ports: RSâ232, RSâ485, USB 2.0, microâSD support
- I/O: 3 digital inputs, 1 analog input, 2 open-collector outputs, 1 relay output
- GNSS: GPS receiver for geoâfencing
- Power Input: 9â30â¯VDC via 4âpin terminal connector
- Operating Temperature: â40â¯Â°C to +75â¯Â°C
- Dimensions: ~100â¯Ãâ¯110â¯Ãâ¯50â¯mm
- Weight: ~287â¯g
- Certifications: CE, compliant with North American LTE bands
Applications
- Unitronics PLC remote connectivity (UniStream, Samba, Jazz)
- SCADA and IIoT telemetry over AT&T network
- WAN redundancy and remote VPN access
- Geo-fenced data collection and asset tracking
- Industrial control panels in harsh environments
Trusted By Customers Worldwide
âOur North American energy asset sites rely on the UCRâSTâB8âAT for remote data collection and control; AT&T network coverage and Modbus support keep our operations stable.â â Automation Engineer, Utilities Group