M5Stack FIRE IoT Development Kit (PSRAM 2.0) Provides a 9-Axis IMU sensor Detects acceleration, angulation, and trajectory Low cost, full-function, and easy for developers Comes with three separable parts Powered with an ESP32 core The M5Stack FIRE IoT Development Kit (PSRAM 2.0) is an upgrade from the Gray kits. Providing a 9-Axis IMU sensor (6-Axis posture acceleration measurement + 3-Axis magnetic measurement). It comes with more hardware resources: 16M Flash + 4M PSRAM, enhanced Base (M5GO Base and M5GO CHG Base), larger battery, etc. For those developers who ask for hardware performance, Fire will be a good choice. FIRE is an M5Stack Core device. Its modular, stackable, scalable, and portable device is powered with an ESP-32 core, which makes it open-source, low cost, full-function, and easy for developers to handle new product development on all stages include circuit design, PCB design, software, mold design, and production.