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Scottsdale, Ariz.-based Freescale Semiconductor has introduced the Xtrinsic MMA8491Q, a new micro-electromechanical system accelerometer featuring ultra-low power consumption and a plug-and-play approach to tilt threshold detection for use in tamper protection for smart meter applications.

According to Freescale, the Xtrinsic MMA8491Q accelerometer for tilt threshold sensing plays an integral role in the company's system-level smart meter reference designs that detect physical tampering. Movement of the meter is detected through the change in tilt angle and communicated to the utility company as a tampering event. The product features X-, Y- and Z-axis tilt threshold detect outputs and operates with reduced power capabilities that determine when a device should operate in a low-power mode or shut off, helping prolong battery life.

“Smart meters are proliferating with the emergence of the connected home and smart grid, and protection from physical tampering is a critical requirement,” says Seyed Paransun, vice president and general manager of Freescale’s Sensor & Actuator Solutions division.


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