The FNIRSI GC-01 is an advanced nuclear radiation detector designed for precise and reliable monitoring of ionising radiation. With its compact design and large LCD screen, the device provides a user-friendly interface for real-time monitoring of radiation levels. The integrated Geiger-Müller counter enables the detection of beta, gamma and X-rays, making it suitable for both industrial and domestic applications. The alarm function, which includes audible, visual and vibrating signals, warns users immediately if radiation levels exceed a set threshold. The detector is equipped with a powerful 1100 mAh battery that can be recharged via a USB-C port, allowing for flexible and convenient use. The FNIRSI GC-01 is therefore an indispensable tool for anyone who wants to ensure a safe and radiation-free environment.