Adafruit Sony Spresense LTE Extension Board with Global SIM Card

The Spresense LTE Extension Board enhances functionality with robust LTE connectivity for the Spresense main board, featuring an onboard antenna and a nanoSIM cardholder.Expanding the main board's interfaces, it offers multiple microphone inputs, a headphone jack, and a microSD card slot. Link them effortlessly via a board-to-board connector to unlock new potential.Engineered for technological sophistication, it supports LTE-M and NB-IoT standards through the Sony ALT1250 chipset, providing low-cost, low-power, and extensive coverage solutions. With compatibility across US and EU bands, explore uninterrupted connectivity.Equipped with a Truphone SIM, it allows immediate deployment, although it's essential to pair it with the Spresense main board for full functionality.