YOSC-OFA fibre optic accelerometer is an accelerometer independently developed by YOSC, which has the characteristics of passive, anti-electromagnetic interference, anti-lightning strike and maintenance-free, and can be accurately monitored for a long time. Adopting a metal sealing design, armored optical cable protection, and equipped with rainproof junction boxes and joint protection devices, the FBG accelerometer can be directly installed on structures exposed to the outdoors, fully suitable for long-term outdoor monitoring needs.