B+B SmartWorx SmartFlex SR308 Wi-Fi 4 IEEE 802.11a/b/g/n 2 SIM Ethernet, Cellular Modem/Wireless Router

$950.00
$845.85 SAVE $104.15
None availableas of 02/14/2026

Ships when available. Free shipping on most items when you spend $100 or more.

Special orders typically ship in 1-12 weeks.

Rated excellent by our customers Read our reviews

Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

Protect this device

Plans are optional and can be left off. Your order is unchanged unless you add one.

Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

Overview

About the B+B SmartWorx SmartFlex SR308

View user manual

SmartFlexTM cellular router provides secure Internet connectivity for devices and LANs via the cellular networks. It can provide automatic wireless failover for wired networks, wireless connectivity for devices in remote locations where cable connections are impractical and wireless connectivity for mobile assets. With upload speeds of up to 50 Mbps and download speeds of up to 150 Mbps, SmartFlex provides ample bandwidth, even for applications that require video.

SmartFlex places intelligence at the network edge with an extremely powerful Cortex A8 CPU at 1GHz, 256 MB flash memory, 512 MB RAM and 128kB M-RAM, providing full support for LTE (Long Term Evolution) speeds and applications. A secure Web interface allows users to configure and manage SmartFlex from remote locations. The router can also upgrade its configuration and firmware from the operator's central server, allowing for simultaneous mass reconfiguration of every router on the network. Users may insert Linux scripts and can create multiple configurations for the same router and switch from one configuration to another at any time.

Modular SmartFlex can be configured for any application. Standard configuration includes 2 Ethernet ports with 2 independent LANs/IP addresses and also includes 1 USB host port, 1 microSD card holder, 2 SIM card holders for automatic failover to an alternate service provider, 2 binary inputs(I/O), 1 binary output (I/O) and onboard GPS.

An optional built-in Wi-Fi module is also available, with industrial grade operating temperature ranges from -40 to +75 °C. Further optional boards include: 3x ETH (the router can be configured with up to 5 total Ethernet ports and 3 independent LANs/IP addresses) or RS-232/485 (isolation strength up to 2.5kV). The SmartFlex supports real time data encryption and the creation of VPN tunnels using IPsec, OpenVPN and L2TP. It supports DHCP, NAT, NAT-T, DynDNS, NTP, VRRP, control by SMS, and numerous other functions, as well as additional software like SmartWorx HUB and R-SeeNet.

Technical specifications

Technical Specifications of the B+B SmartWorx SmartFlex SR308

General Information

General Information specifications
Manufacturer Advantech Co., Ltd
Manufacturer Part Number BB-SR30818025-SWH
Manufacturer Website Address http://www.advantech.com
Brand Name B+B SmartWorx
Product Line SmartFlex
Product Model SR308
Product Name SmartFlex SR308 Modem/Wireless Router
Product Type Modem/Wireless Router

Technical Information

Technical Information specifications
Wi-Fi Generation Wi-Fi 4
Network Band Dual Band
Processor Type Cortex A8
Processor Speed 1 GHz
Standard Memory 512 MB
Maximum Upload Speed 6.25 MB/s

Wireless Specifications

Wireless Specifications specifications
Broadband Transmission Technology EthernetCellular
Wireless LAN Standard IEEE 802.11a/b/g/n
ISM Band Yes
UNII Band Yes
ISM Maximum Frequency 2.40 GHz
UNII Maximum Frequency 5 GHz
Cellular Generation 4G
Cellular Network Supported TD-SCDMA 2100HSPA 2100UMTS 1900LTE 850HSPA 850HSPA 900TD-SCDMA 1900TD-SCDMAUMTS 2100LTE 700UMTS 850LTE 1700LTE 1900TD-SCDMA 900LTE 2300HSPA 1900UMTS 900LTE 900LTE 2100LTE 2600TD-SCDMA 850LTE 1800
Cellular Data Connectivity Technology GPRSDC-HSPA+LTEHSPA+HSPAEDGELTE Cat 4UMTS
Total Wireless Transmission Speed 18.75 MB/s
Encryption Standard WEPWPA2-PSKWPA-PSKTKIPAES
Firewall Type PATNAT

Interfaces/Ports

Interfaces/Ports specifications
Number of Network (RJ-45) Ports 1
Total Number of Network Ports 2
USB Yes
PoE (RJ-45) Port Yes
Number of Broadband (RJ-45) Ports 1
USB Standard USB 2.0

Network & Communication

Network & Communication specifications
Ethernet Technology Fast Ethernet
VPN Supported Yes
Multi-SIM Supported Yes
Number of SIM Card Supported 2
SIM Size Supported Mini

Storage

Storage specifications
Flash Memory Capacity 256 MB
Storage Media MicroSD

Physical Characteristics

Physical Characteristics specifications
Product Material Metal
Form Factor DIN Rail Mountable
Height 2.2"
Width 4.9"
Depth 3.8"
Weight (Approximate) 13.23 oz

Miscellaneous

Miscellaneous specifications
Package Contents
  • SmartFlex SR308 Modem/Wireless Router
  • DIN Rail Clip
  • PS Cable 2-wire, MO 2 Pins, 3m, v3 Routers
  • Quick Start Guide
Certifications & Standards
  • RCM (Australia, New Zealand)
  • IEC 61000-6-2:2005, IEC 61000-6-3:2006
  • EN 60950-1:2006 + A11:2009 + A1:2010 + A12:2011 + A2:2013
  • EN 62311:2008

Ratings and reviews

Do you own the B+B SmartWorx SmartFlex SR308?

Be the first to write a review.

Displaying 1-10 of 70

Accessories

Similar products you might also like

Wireless Routers

Shipping and returns

Free shipping on most items when you spend $100 or more. In-stock items ship on the next open shipment slot. The buy box above shows the live order-by countdown and the estimated arrival date.

Special order item. This item ships direct from the manufacturer and cannot be cancelled once ordered. If you have any questions before ordering, ask us first: chat with us or call 1-800-692-8757.

Questions about shipping or returns? Chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.