The Ericsson Cradlepoint S400 is a compact, semi-ruggedized secure router for light industrial, digital signage and kiosk deployments. This part number, TBT3-0400-C6-NA-N, is the North America configuration for the U.S. and Canada. It ships with a 3-year NetCloud IoT Essentials plan, an AC power supply and antennas. The embedded Cat 6 LTE modem has dual 4FF SIM slots with SIM-based auto-carrier selection. It uses 2x2 MIMO and downlink carrier aggregation for peak rates of 300 Mbps down and 50 Mbps up. It covers LTE bands 2, 4, 5, 7, 12, 13, 14, 25, 26, 29, 30, 66 and 71, plus TDD bands 41 and 48. Band 48 support includes FCC Part 96 CBRS for private LTE networks. The modem is PTCRB certified, with network operator certifications for AT&T, T-Mobile and Verizon. Local connections include one Gigabit Ethernet port (LAN/WAN), single-radio dual-band 802.11ac Wi-Fi 5 with WPA3, and USB 2.0. An expansion slot accepts RS232 serial, dual Fast Ethernet or GPIO modules. GNSS covers GPS, Galileo, GLONASS and BeiDou. The unit is rated from -20 °C to 60 °C and IP30, meets MIL-STD-810H shock and vibration methods, and holds Class I Div 2 and ATEX Zone 2 certifications. It runs on 9–33 VDC or 802.3af PoE. NetCloud IoT Essentials provides NetCloud Manager for fleet management, policies, troubleshooting and software updates. It also includes zero trust connect-and-go security and 24x7 support. The hardware carries a limited lifetime warranty while the subscription is active.