Also, for each distributor's protection, we want to make certain that everyone understands that there is no warranty for this free library. If the library is modified by someone else and passed on, we want its recipients to know that what they have is not the original version, so that any problems introduced by others will not reflect on the original authors' reputations.

Finally, any free program is threatened constantly by software patents. We wish to avoid the danger that companies distributing free software will individually obtain patent licenses, thus in effect transforming the program into proprietary software. To prevent this, we have made it clear that any patent must be licensed for everyone's free use or not licensed at all.

Most GNU software, including some libraries, is covered by the ordinary GNU General Public License, which was designed for utility programs. This license, the GNU Library General Public License, applies to certain designated libraries. This license is quite different from the ordinary one; be sure to read it in full, and don't assume that anything in it is the same as in the ordinary license.

The reason we have a separate public license for some libraries is that they blur the distinction we usually make between modifying or adding to a program and simply using it. Linking a program with a library, without changing the library, is in some sense simply using the library, and is analogous to running a utility program or application program. However, in a textual and legal sense, the linked executable is a combined work, a derivative of the original library, and the ordinary General Public License treats it as such.

Because of this blurred distinction, using the ordinary General Public License for libraries did not effectively promote software sharing, because most developers did not use the libraries. We concluded that weaker conditions might promote sharing better.

However, unrestricted linking of non-free programs would deprive the users of those programs of all benefit from the free status of the libraries themselves. This Library General Public License is intended to permit developers of non-free programs to use free libraries, while preserving your freedom as a user of such programs to change the free libraries that are incorporated in them. (We have not seen how to achieve this as regards changes in header files, but we have achieved it as regards changes in the actual functions of the Library.) The hope is that this will lead to faster development of free libraries.

The precise terms and conditions for copying, distribution and modification follow. Pay close attention to the difference between a "work based on the library" and a "work that uses the library". The former contains code derived from the library, while the latter only works together with the library.

Note that it is possible for a library to be covered by the ordinary General Public License rather than by this special one.

TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

0.This License Agreement applies to any software library which contains a notice placed by the copyright holder or other authorized party saying it may be distributed under the terms of this Library General Public License (also called "this License"). Each licensee is addressed as "you".

A "library" means a collection of software functions and/or data prepared so as to be conveniently linked with application programs (which use some of those functions and data) to form executables.

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ZyXEL Communications IPC-3605N manual

IPC-3605N specifications

ZyXEL Communications has established itself as a leader in the networking and communication technology industry, and one of its noteworthy products is the IPC-3605N. This network camera is designed for both home and business surveillance, offering a reliable and high-quality solution for security needs.

The IPC-3605N features a 2-megapixel image sensor capable of capturing crystal-clear video at 1080p resolution. This high-definition recording ensures that the finer details are not lost, which is crucial for identification in security scenarios. With a wide viewing angle provided by its fixed lens, the camera can cover larger areas with fewer units required, making it an efficient choice for comprehensive surveillance coverage.

One of the key features of the IPC-3605N is its night vision capabilities. Equipped with infrared LEDs, this camera can provide clear images in low-light conditions, allowing for 24/7 monitoring. The smart IR technology automatically adjusts the LED intensity based on the distance of objects, preventing overexposure and ensuring that video quality remains high even in total darkness.

Connectivity is another strong suit of the IPC-3605N. It supports multiple network protocols, including Ethernet and Wi-Fi, making installation flexible and straightforward. Users can choose either a wired connection for stability or a wireless setup for convenience without the hassle of cabling.

Moreover, the IPC-3605N comes with built-in motion detection technology. This feature sends real-time alerts to users whenever motion is detected within its field of view. This immediate notification system helps users to respond swiftly in case of any suspicious activities. The camera's ability to store footage locally or to a cloud service provides further flexibility for data management and retrieval.

In terms of construction, the IPC-3605N is designed to withstand various environmental conditions, making it suitable for both indoor and outdoor installations. Its robust housing ensures durability and protection against dust and water, rated IP66, ideal for outdoor surveillance applications.

Lastly, the IPC-3605N is user-friendly, with an intuitive mobile app that allows users to access real-time footage, manage settings, and review recorded clips easily. This ensures total control and visibility, making it a valuable asset for anyone looking to enhance their security measures.