Sierra Wireless MP70 vs AirLink XR60: FAQ from Someone Who's Made the Mistakes

If you're here because Sierra Wireless is in your search bar, you're likely doing the same research I did in 2018. I just didn't have answers. I'm not a salesperson. I'm an integrator who's spent seven years putting AirLink routers into public safety vehicles, transit depots, and industrial control networks. I've personally made and documented 23 significant mistakes, totaling roughly $12,000 in wasted budget, and now I maintain our team's checklist. When I first started in this industry, I assumed the datasheet answered every question. It doesn't. This is the FAQ I use with customers now, minus the sales pitch. I'd rather explain the boring stuff upfront than get an angry call later.

Frequently Asked Questions Every Integrator Should Ask About Sierra Wireless

1. Is Sierra Wireless still alive after the Semtech acquisition?

Yes, but the logo on the box may change. Semtech completed its acquisition of Sierra Wireless in 2023, and the AirLink portfolio is still sold and supported. According to Semtech's press release (semtech.com, August 2023), Sierra Wireless now operates as part of Semtech's wireless and IoT group. In the practical world, this means two things. First, if you're quoting a project, don't rely on old model names without verifying current part numbers. Second, if you're managing regulatory docs, check whether the brand name on the compliance certificate matches what arrives at your dock. We had a shipment of modules come in with Semtech branding and our procurement team rejected it because it didn't match the purchase order. That was a 10-minute fix, but it cost us a full day. And if you're in public safety, verify FirstNet or carrier certification before you promise anything to an officer.

2. What's the difference between the MP70 Sierra Wireless router and the AirLink XR60?

The short version: the MP70 is a vehicle-first router, and the Sierra Wireless AirLink XR60 is a rugged industrial gateway that works in vehicles but is also at home in a cabinet. The MP70 has ignition-aware power control, CAN bus connectivity, and automotive-grade features you want in a patrol car or ambulance. Actually, let me correct myself: the XR60 isn't fixed-only. It's just that the MP70 has deeper vehicle integration. The XR60 is more about the edge: multiple Ethernet ports, flexible mounting, and similar cellular options. In deployments, I usually put an MP70 in anything with a siren, and an XR60 when the site has no dedicated network room.

What most people don't realize is that vehicle routers fail differently than fixed routers. The bracket, connector, and power wiring cause more headaches than the modem ever does. So if you're comparing MP70 and XR60, look at the physical environment first. We didn't have a formal vehicle checklist until an order of 14 MP70s arrived with the wrong mounting brackets. The routers were fine; the brackets weren't. That was $850 in overnight shipping and three unhappy installers.

3. Can I use an AirLink XR60 with HPE networking equipment?

Yes. That's actually a common stack: the Sierra Wireless gateway provides cellular WAN, and HPE (or HPE Aruba) switches and access points run the LAN. The two don't fight each other as long as you remember which layer is doing what. One config mistake I've made: I had the XR60 in IP pass-through and also had DHCP blocked from the LAN. The HPE switch couldn't get a lease. I spent two hours blaming hardware before I looked at my own config. The lesson wasn't about brand compatibility. It was about reading the routing table like an adult.

4. What does 'USB Power Delivery while recording' mean on a spec list?

This one comes up more than you'd think. If you're building a mobile or fixed network system with a camera, a microphone, or a compact recorder attached to the router, the USB port needs to deliver enough stable power during recording. A normal USB-A port at 5V/1A can keep a phone topped up, but it might not sustain a recorder that spikes current whenever it writes video files. I started keeping a 'USB Power Delivery while recording list' for every vehicle build. It sounds silly, but it catches power problems before the customer does. On one test drive, a recorder appeared to be powered, but every time it buffered, the voltage dipped and it restarted. 20 minutes of footage gone. On paper, it seemed impossible. In the van, it was obvious once we watched the power monitor. If you're selecting a router or gateway for this use case, list exactly which ports support USB Power Delivery, and what current they deliver. Don't assume all USB-C ports do. Some just use the connector shape.

5. 4G or 5G: what should an integrator actually buy?

Don't buy the newest modem just because it says 5G. Look at the carrier's spectrum and the expected life of the device. In 2025, we still deploy LTE for a lot of telemetry and public safety applications because coverage is broad and the modules are known quantities. A 5G router is worth it when your data use looks like a movie shoot, not a thermostat. I've seen a customer pay a premium for a 5G module and then put a 4G SIM inside. Check the SIM before you get proud of your hardware. I want to say 60% of our 5G troubleshooting calls are SIM or certification issues, but don't quote me on that.

6. Which Sierra Wireless module should I build into my product?

If you're a product developer, this is a deeper conversation. The EM9191 and newer modules are popular in the ecosystem, but the right choice depends on carrier approvals, antenna design, and software support. I can't answer that without a tech package. What I can tell you: designing a module into a product without checking the reference design is a classic mistake. I once saw a team assume their existing antenna matching would work for a different band set. It didn't. The device powered up, connected, and then dropped signal whenever anyone walked past the window. A $200 antenna rework became a $9,000 redesign. That's the kind of lesson you don't want to learn twice. At least, that's been my experience with industrial customers.

7. What's the best multimeter for electronics work?

The best multimeter for electronics is the one you'll actually use. For field router and vehicle installations, an auto-ranging meter with continuity and DC amps is enough. I use a Klein MM400 for most installs because it's easy to carry and it has the basic ranges without a ton of menus. If you're doing component-level repair, get a true-RMS meter with a millivolt range, something like a Brymen or Fluke 87V. But don't buy the lab meter first. I killed a $300 Fluke by leaving the probes in the amp jack and touching a vehicle battery. That's not the meter's fault. That's me being in a hurry.

One more install tip: use the meter to verify the power source before plugging in a router. We caught 47 potential power issues in the last 18 months by measuring switch-on voltage and checking for voltage dips under load. That's 47 problems that never made it to the customer's parking lot.