Access Control Systems
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ALEKO LM279 Touchless No Touch Door Infrared Sensor Exit Button Switch for Access Control Systems Gates and Garage Openers: LM279 Featured with infrared technology, touch free, more convenient to useHigh capacity of relaying dry contact, contactless, free from contagious disease spreadThe switch responds agilely and quicklyIP-55 industrial protection levelWidely used in gate, door, exit automation controlLED indication Stainless steel plate very durable to usIt is easy to install and convenient to use
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Access control is one of the fundamental services that any Data Management System should provide. Its main goal is to protect data from unauthorized read and write operations. This is particularly crucial in today's open and interconnected world, where each kind of information can be easily made available to a huge user population, and where a damage or misuse of data may have unpredictable consequences that go beyond the boundaries where data reside or have been generated.
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Boost Your Career Potential with Today's Most Complete Guide to Advanced Locksmithing Skills, Techniques, and Systems Turn to "Master Locksmithing" for clear, nontechnical guidance on the full range of advanced locksmithing skills, techniques, and
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Access Control Systems are difficult to learn and even harder to master due to the different ways in which manufacturers approach the subject and the myriad complications associated with doors, door frames, hardware, and electrified locks. "Electronic
Good 0471735558 Item in good condition. Textbooks may not include supplemental items i.e. CDs, access codes etc.
Role-based access control (RBAC) is a security mechanism that has gained wide acceptance in the field because it can greatly lower the cost and complexity of securing large networked and Web-based systems. Written by leading experts, this newly revised ed
Integrated AirMax Technology Unlike standard WiFi protocol, Ubiquiti's Time Division Multiple Access (TDMA) AirMax protocol allows each client to send & receive data using pre-designated time slots scheduled by an intelligent AP controller. This time slot method eliminates hidden node collisions & maximizes air time efficiency. It provides many magnitudes of performance improvements in latency, throughput, & scalability compared to all other outdoor systems in its class.
The book blends readability and accessibility common to undergraduate control systems texts with the mathematical rigor necessary to form a solid theoretical foundation. Appendices cover linear algebra and provide a Matlab overivew and files. The reviewers pointed out that this is an ambitious project but one that will pay off because of the lack of good up-to-date textbooks in the area.
Written as a second level graduate text with contents not found in any other single book, Optimal Control Systems provides an accessible yet comprehensive treatment of the subject. In a simplified, accessible presentation, the author focuses on the control of deterministic, dynamic physical systems. The author incorporates just the right amount of mathematical rigor and integrates the use of both MATLAB and SIMULINK throughout the book, offers numerous exercise problems, and provides a solutions manual with qualifying course adoptions.
Harmonics, Power Systems, and Smart Grids, Second Edition compiles the most relevant aspects of harmonics in a way that the unfamiliar reader can better grasp the subject matter and the experienced reader can directly access specific subjects of interest. The text begins with a definition of harmonics, along with analytical expressions for electrical parameters under nonsinusoidal situations, and then: Discusses important and widely used industry standards to control harmonic distortion levels Describes methods to mitigate the effects of harmonics, detailing the operation principles and design of passive filters and active filter fundamentals Presents alternative methods, such as stiffer AC sources, power converters with increased number of pulses, series reactors, and load reconfiguration Reviews the elements that play a role in the study of the propagation of harmonic currents in a distribution network Explains how to determine power losses in electrical equipment attributed to harmonic waveform distortion Covers harmonics from solar and wind power converters and power electronics in FACTS and HVDC technologies Explores harmonics from electric vehicles connected to the grid, superconductive fault current limiters, and electric vehicle charging stations Featuring three new chapters, a number of new examples and figures, and updates throughout, Harmonics, Power Systems, and Smart Grids, Second Edition provides a comprehensive reference on harmonic current generation, propagation, and control in electrical power networks, including the broadly cited smart grid.
This text is an unbound, binder-ready edition. Highly regarded for its accessible writing and practical case studies, Control Systems Engineering is the most widely adopted textbook for this core course in Mechanical and Electrical engineering programs. This new sixth edition has been revised and updated with 20% new problems and greater emphasis on computer-aided design.
This essential resource for professionals and advanced students in security programming and system design introduces the foundations of programming systems security and the theory behind access control models, and addresses emerging access control mech
Hai Multistage Omnistat2 with Humidity Control for Conventional and Heat Pump Systems, White: Humidifier and dehumidifier controlSupports 2-stage conventional and 2-stage heat pump with 3rd-stage aux heatDual fuel with 2nd stage aux heatSupports 1 external temperature sensor for indoor or outdoorDigital precise temperature controlAutomatic heat/cool changeoverFan cycle mode periodically circulates air for comfortDisplay outdoor temperature and humidity optionalIndoor sensor averaging with remote sensorDoes not need batteries to retain settings and timeGraphic display of HVAC weekly usageLearns how home heats and cools for efficiency and comfort7-day programmable scheduleTemperature settings for home, night, away and vacation when integrated with an Hai home control systemFilter reminder for peak efficiencyBuilt-in vacation mode feature restores temperature before returning homeCommunicates with Hai home control systems and other manufacturer's automation systemsOptional remote access via Internet and telephone expansion port for wireless communicationProximity/motion detector, screen lights up when approachedUsers can choose between 1 of 2 display optionsMulti-color backlight that's adjustable at any timeWhite1-year warranty