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Installation is a little tricky, however; we had to install not just the doorbell, but also a separate device inside our existing doorbell's chime box. No price informationCheck WalmartNo price informationCheck AmazonWe check over 130 million products every day for the best pricesThe SpotCam Doorbell takes an opposite approach from most video doorbells, with its large button enclosure and a tiny ringer. The enclosure holds the 4 AA batteries that power the device, while the tiny ringer is no bigger than most USB power adapters and plugs straight into any wall socket. It doesn’t require any wire connection between the two, so it is more landlord friendly than wired models. A microSD card slot lets you store video recordings. Forget about motion detection triggering the doorbell cam unless you add a Spotcam Camera to your setup.home monitored security
August 3, 2009Students Develop Cane With E Tags to Guide BlindBy THE ASSOCIATED PRESSFiled at 3:33 p. m. ET DETROIT AP A cane equipped with the technology that retailers use totag merchandise could help blind people avoid obstacles. An engineering professor and five students at Central Michigan Universityhave created a ''Smart Cane'' to read electronic navigational tagsinstalledbetween buildings to aid the blind in reaching their destinations moreeasily. ''This project started as a way for me to teach students to see andunderstand the ways that engineering can be used for the greater good,''said Kumar Yelamarthi, the professor and project leader. ''We wanted to dosomething that would help people and make our campus more accessible. '' During the spring term, Yelamarthi and five senior engineering studentstested the cane, which is equipped with Radio Frequency Identificationtechnology, similar to what retailers put on products to keep them frombeing stolen. The Smart Cane contains an ultrasonic sensor that is paired with aminiaturenavigational system inside a messenger style bag worn across the shoulder. For the test, the students installed identification tags between twobuildings on the campus in Mount Pleasant, Mich. A speaker located on thebag strap gave audio alerts when the system detected an obstacle and toldthe user which direction to move. Students wearing glasses that simulate visual impairment tested the cane.