There's plenty of sensor gear around for hobbyists to play with, but not so many polished products for the monitoring-obsessed. Cao Gadgets is attempting to fill that niche with its functionally named Wireless Sensor Tags - small devices which monitor movement and temperature, notifying you if anything's amiss. A magnetometer registers movement by changes in its orientation, and can inform you of door openings or similar disturbances, while the temperature triggers are based on upper or lower thresholds.
Engadget , Wireless Sensor Tags alert you to movement and temperature changes, fit on your keyring, Wireless Sensor Tags alert you to movement and temperature changes, fit on your keyring
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