The world’s leading supplier of mature
solid-state quartz based inertial sensors and subsystems

For more than four decades, Systron Donner Inertial Division (SDID), a BEI Sensors & Systems Company, has been the leading provider of precision inertial sensors and subsystems to the automotive, commercial, and aerospace markets. Our innovative designs of angular rate sensors, linear accelerometers, and inertial measurement systems provide advanced guidance and control capability for a wide range of applications such as advanced missile systems and military aircraft. More recently, our mature solid-state quartz technology has found uses in hundreds of diverse commercial applications — from automotive chassis control for anti-skid systems…to helping navigate autonomous industrial robots through automated warehouses…to stabilizing communications antennae on ships…to assisting in the diagnosis and monitoring of mobility disorders such as Parkinson's disease.