Gleichmann Electronics is offering a micromechanical six degrees of freedom i.e. 6DoF sensor developed by SensorDynamics.
The sensor consumes 6 mA current in a normal operation mode, whereas in sleep mode, it would use only 25 µA by decreasing the sample frequency of the three axes acceleration sensor from the original 8 Hz to 1 Hz. The user could set up an individual threshold for the acceleration via the three digital interfaces of the SD746.
When the sensor gets into the sleep mode, the acceleration which is detected on one axis is higher than the threshold set, and this would result in the generation of a corresponding output signal which would trigger a system activation.
The sensor offers six degrees of freedom for measuring acceleration and angular rate along all the 3 axes, across a wide measurement range of up to ±8g for acceleration and up to ±2048°/s for angular rate. The calibrated measurement and the temperature compensated values can then be read either by using an SPI interface or an I²C.
Source: http://www.msc-ge.com