The shock sensor provides protection to equipment during operation by detecting sudden speed changes. This article presents the design of a micro-level shock sensor that is able to detect acceleration values in two different threshold ranges. This structure includes a moving mechanism, a thermoelectric mechanism that restores the sensor, and capacitive sensing mechanisms that convert the displacement signal to an electrical signal. The sensor is based on a compliant multi-stable mechanism so that it will be able to operate with high precision and saving a large amount of energy. An investigation of the characteristics of moving mechanisms is conducted using finite element methods and numerical calculations. The influence of current and temperature on the displacement of the reset mechanism was also investigated. Two acceleration values of 10 g and 40 g are detected by an optimized shock sensor structure.