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Wireless Sensor Tags alert you to movement and temperature changes, fit on your keyring

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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. The $15 sensors (or $12 if you want three or more) have a battery life that should last several years depending on their setup, but there is one catch -- you also need the Tag Manager hub ($50), which plugs into your router via Ethernet. It keeps in frequent contact with any subordinates in its 200-foot range, and if after several attempts it finds one MIA, a warning can be sent in case any of your home guards have walked or fallen asleep. The tags also have inbuilt beepers which can be pinged to track down any rogue possessions they're partnered with, like your keys.

A lot of thought has been put into micromanaging the tags, which are customizable through web-based, Android or iOS apps, and will send out alerts via email, Twitter, or push notifications on slates and phones (text-to-speech is available if you're too lazy to read). If you're into your data, you can also access trigger statistics from the software, complete with graphs. The home monitoring kit is available now, and instead of crashing your browser with too many embeds, we've decided to point you to the source below for the half-dozen demo vids.

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