SKU: 61874257446

B+B SmartWorx SmartFlex SR305 Cellular Modem/Wireless Router

Sale price$363.45 Regular price$403.83
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Ships within 48 hours · Estimated delivery Aug 9 - Aug 14

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Description

B+B SmartWorx SmartFlex SR305 Cellular Modem/Wireless RouterMeet the B+B SmartWorx SmartFlex SR305, a purpose built cellular modem and wireless router engineered for reliable, secure Internet access across diverse environments. Designed to keep critical systems online even when traditional wired connections fail, the SR305 delivers seamless connectivity to devices and LANs through cellular networks. This device is ideal for industrial IoT deployments, remote monitoring sites, field service operations, retail

Meet the B+B SmartWorx SmartFlex SR305, a purpose-built cellular modem and wireless router engineered for reliable, secure Internet access across diverse environments. Designed to keep critical systems online even when traditional wired connections fail, the SR305 delivers seamless connectivity to devices and LANs through cellular networks. This device is ideal for industrial IoT deployments, remote monitoring sites, field service operations, retail locations, and backup networking scenarios where uptime is non-negotiable. Its SmartFlex technology combines rugged hardware with smart networking features to create a flexible, scalable solution that can adapt to changing network conditions and expanding data demands. Whether you need automatic wireless failover for a wired network, remote device connectivity, or a secure gateway for sensitive data, the SR305 is built to perform with minimal manual intervention. Expect resilient performance, straightforward setup, and robust security that helps protect your networks from common cyber threats while delivering dependable, continuous access to the information that drives business decisions.

  • Secure Internet connectivity for devices and LANs via cellular networks, delivering consistent online access even when wired networks are disrupted or unavailable.
  • Automatic wireless failover for wired networks, ensuring uninterrupted connectivity by seamlessly switching to cellular data without manual intervention.
  • Wireless connectivity for devices in remote locations, job sites, or spaces without reliable wired infrastructure, enabling remote monitoring and control.
  • Industrial-grade design with compact form factor, designed for harsh environments, simplified mounting, and easy integration into existing network architectures.
  • Flexible management and security features, including centralized configuration, remote monitoring, firewall controls, and VPN support to safeguard data in transit.

Technical Details of B+B SmartWorx SmartFlex SR305 Cellular Modem/Wireless Router

  • Get this information from the "specifications" section of the product from https://ec.synnex.com/ using product "UPC" or "SKU" as reference

How to install B+B SmartWorx SmartFlex SR305

  • Choose a suitable installation location near your network edge where the SR305 can easily connect to both your LAN and the cellular antenna. The unit is designed for compact deployments and can be mounted on a shelf, wall, or DIN rail depending on your environment. Ensure there is adequate ventilation to prevent overheating in warm industrial spaces.
  • Connect the LAN devices to the SR305’s Ethernet port(s) to establish the primary local network. If you intend to use the SR305 as a primary gateway, plan the IP addressing scheme and firewall rules ahead of time to minimize configuration changes after deployment.
  • Attach the external cellular antenna(s) to the appropriate ports to maximize signal quality. In locations with weak cellular reception, consider dual antennas for diversity and better link stability. Ensure the SIM card is inserted and provisioned with an active data plan compatible with local networks and roaming as needed.
  • Power up the SR305 and access the web-based management interface. Start with a basic configuration to set up WAN redundancy, enable the firewall, and define VPN or remote access settings if required. If the device supports Wi‑Fi, configure secure SSIDs, encryption, and guest access policies to protect the LAN.
  • Test and verify connectivity and failover behavior. Simulate a wired WAN outage to confirm that the SR305 automatically routes traffic over the cellular network. Verify VPN connections, firewall rules, and device reachability from both on-site and remote management locations.

Frequently asked questions

  • Q: What kinds of networks is the SR305 designed to support?

    A: The SR305 is built to provide secure Internet connectivity for devices and LANs through cellular networks, with features that enable automatic wireless failover for wired networks and wireless connectivity for devices in remote locations. It supports typical office and industrial deployments where a reliable gateway is essential.

  • Q: How does the SR305 handle failover?

    A: The SR305 continuously monitors the status of the primary wired WAN. If the wired connection becomes unavailable, it automatically switches traffic to a cellular data path, maintaining ongoing connectivity with minimal disruption to users and devices.

  • Q: Can I manage the SR305 remotely?

    A: Yes. The device is designed for centralized management and remote monitoring. Administrators can configure security policies, VPN settings, and network rules via a web UI and, where supported, remote management protocols, enabling oversight across multiple sites.

  • Q: What security features are included?

    A: The SR305 includes core networking protections such as firewall capabilities, network address translation (NAT), and VPN options to secure data in transit. These features help protect sensitive information when the device communicates over cellular networks and local networks alike.

  • Q: Is the SR305 suitable for outdoor or rugged environments?

    A: The SmartFlex SR305 is designed with a rugged, industrial-minded profile intended for challenging environments. Its form factor supports easy installation in equipment cabinets, on DIN rails, or within vehicle networks, making it versatile for field deployments and maintenance operations.

  • Q: Does the SR305 support multiple cellular bands or roaming?

    A: While exact band support depends on hardware revision and regional variants, the SR305 is commonly configured to use cellular networks that offer broad coverage, and it can be provisioned for roaming where supported by the service plan and SIM configuration. Always confirm regional compatibility and carrier support for your location before deployment.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 61874257446

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Maritza Grapevine
Louisville, US
★★★★★ 4
ASURION EXTENDED WARRANTIES
I was skeptical that my ASURION warranty would be honored since it was not an easy process to submit claim and required following up several times. Not as easy as buying it initially for a product on check out at amazon. Once the burdensome process was completed on my end, It was easy load the gift card issued for the warranty to my Amazon account. I would definitely look at warranty policies closer though before purchasing one. Good luck if you decide to purchase extended warranty.
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Reviewed in the United States on May 19, 2026
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Quakonmoon
Cuba, US
★★★★★ 5
True value for money
It’s great protection plan I can say “A true value for the money and it’s very easy to claim and process
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Reviewed in the United States on April 23, 2026
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Amazon Customer
Louisville, US
★★★★★ 5
Professional
Worth the protection
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Reviewed in the United States on April 15, 2026
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Mir31
Grantham, US
★★★★★ 1
Waste of Money and Time
It’s useless buying this protection plan. They will not help you with your issue. They will refer you back to the seller. What’s the point of buying a protection plan when they refuse to help? I DO NOT recommend purchasing this plan. Total waste of money and time.
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Reviewed in the United States on January 25, 2026
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Lois Ilene
Lake Worth, US
★★★★★ 5
Quick and easy to file a claim & get resolution!
I bought a blender from Amazon about 18 months ago and at the same time, purchased the Asurion policy to cover it. The glass pitcher cracked last week and I filed a claim with Asurion. Having never used Asurion before, I wasn't sure what to expect but I was blown away by the ease and speed with which my claim was resolved. Immediately after submitting the claim, Asurion sent a pre-paid shipping label with clear instructions on what to do next. After packing up the blender, taping the label on the front of the box (I had kept the original box the blender came in), and dropping the box off at the UPS location near me (Asurion's instructions included addresses for 2 drop-off locations in my tiny town), I had a refund in my email within hours. I was able to add the refund to my Amazon account simply by clicking on a button in the email and there it was, a credit in my Amazon account! As I said earlier, I'm blown away by how easy it was to file my claim and get a refund. Asurion made the entire process so effortless! Since the blender I had purchased is no longer available, I ordered a different one from Amazon (it arrives today - yay!) and I can guarantee you that I also purchased the Asurion policy to cover it. Thank you, Asurion, for making the process so easy and the resolution so fast.
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Reviewed in the United States on January 14, 2022

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