The latching switch, which is demanded for passive sensing, is designed for impact detection of transportation. The robustness of latching switch and the capability of resetting the switch is discussed. The reverse acceleration is used to verify the robustness of latching switch. For the capability of resetting the latch, the external magnets are used to induce magnetic field. The switch undergoes the magnetic torque by the magnetic field, resulting in deformation of the cantilever, so that switch reset. The switch is fabricated with suspended gap of 2.2 μm, 41.5 μm, 59.4 μm. After the reverse acceleration test, the switch remained stable. This result verifies the switch is robust. For the capability of resetting the latch, the switch of gap 2.2μm can’t be reset successfully. When the angle of the magnetic field and switch is changed from 0˚ to 20˚, the switches of gap larger than 41.58μm is reset, but the acceleration threshold has 24% difference, and these switches are not robust at all. According to the ANSYS simulation, the magnetic torque we used causes the switches plastic deformation. Some of switch parameter should be redesigned.