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• • Measuring And Controlling Devices

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"Solar Electric Design Guide:"

Solar Electric Design Guide Solar Electric systems are actually quite simple. A Photovoltaic or "PV" Module is used to charge batteries ( much like your car alternator charges the battery in your car ). A charge control, similar to a car voltage regulator keeps the battery(s) from overcharging. The stored electricity can be used when it is needed for lights, TV, radio, appliances, pumping and more...

http://www.keytelemetering.com/SolarDesign.htm

"Solar Power Short Course:"

Solar Power Short Course What are photovoltaics? Photovoltaics are solid-state semiconductor devices that convert light directly into electricity. They are usually made of silicon with traces of other elements and are first cousins to transistors, LEDs and other electronic devices. How does it work? A photovoltaic device (generally called a solar cell) consists of layers of semiconductor materials...

http://www.keytelemetering.com/tutorial.html

"Grounding and Surge...

Grounding and Surge Protection Even the best surge protection device is of no use if incorrectly installed. Installation, and more specifically earthing, is a critical aspect of surge protection. Earthing can seem a bewildering subject. Even in the restricted electrical sense of the word, it can mean different things to different people. Without considering all possible cases, here are a few examp...

http://www.keytelemetering.com/Surge_Tutorial2.htm

Introducton to Spread Spectrum

900 MHz Parabolic Antenna 14 db Gain No FCC License Required Fast Data up to 115 kbs Easy to Implement Range up to 20 Miles Max Power One Watt Output One Year Warranty (Parts & Labor) Thirty Day Return Full Refund DatraxRF 900 MHz. Radio Modem by Key Telemetering Products The DatraxRF is simply a wireless data link connecting two serial devices (PC,PLC, RTU etc.) The system is totally transpar...

http://www.keytelemetering.com/Spread_Body.htm

Domino 620

Domino 620 Remote Terminal Convert Your Info to a Serial Data Stream The Domino 620 Remote Terminal is a complete, stand alone, Remote Data Reporting system on a single printed circuit board. The 620 contains all the hardware and firmware required to provide the specific monitoring and control functions as specified by you. Here you have a low cost solution for industrial applications with modest ...

http://www.keytelemetering.com/620-Domino.htm

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