Cradlepoint TAA-MA-RX20-MC R920 Managed Accessory, TAA — Modem Bay, GPIO, Serial

The Cradlepoint TAA-MA-RX20-MC expands the R920 ruggedized mobile router with the three interfaces vehicle fleets request most—a modular modem bay, GPIO, and serial—in the TAA part number that government purchasing requires. The modem bay accepts a separately purchased MC20 modular modem, giving the compact R920 a second cellular radio for dual-carrier designs where automatic failover between networks is mandatory, not optional. The GPIO and serial interfaces handle the physical side of a vehicle build. GPIO lines wire to ignition sensing for orderly power-up and shutdown, to door and light-bar triggers feeding CAD and dispatch systems, and to relay outputs controlling onboard equipment. The serial port connects the mobile data terminals, telemetry units, and controllers that still anchor many fleet workflows. Because the RX20 is a managed accessory, all of it is configured and monitored through the R920's NetCloud account—no second device to administer, patch, or inventory separately. For agencies, the TAA designation removes a common procurement snag: grant-funded vehicle upfits require Trade Agreements Act compliance on each component, and one non-compliant accessory can hold an entire build order. This SKU keeps R920-based upfits clean end to end, pairing naturally with Cradlepoint's other TAA accessories. Specify it at initial installation even if the second modem comes later—retrofitting vehicles back through the shop costs far more than the accessory. Shipping weight is about 3.1 pounds; UPC 840292703773.