户外使用：因其便携性和一定的环境适应性，在户外露营、露天聚会等场合也可以使用，播放一些娱乐视频或进行户外教学、展示等活动。
The S40 cannon projector usually refers to a type of projector with an appearance similar to a cannon barrel. There are many products of this kind of projector on the market. Here are some common characteristics:
Basic parameters:
Resolution: Generally speaking, the resolution of the S40 cannon projector has many kinds. Commonly seen are 800x600 (SVGA) and 1280x720 (720P), etc., which can meet basic movie watching and simple office presentation needs.
Brightness: The brightness is usually from dozens to several hundred lumens. For example, some products have a brightness of about 120 lumens. This determines its projection effect under different ambient lights. Those with lower brightness are more suitable for use in darker environments.
Projection size: The projection picture size varies. The small one can reach dozens of inches, and the large one can project a picture of hundreds of inches. The specific projection size range varies depending on the product.
Functional characteristics:
Portability: The cannon-shaped design makes this type of projector usually relatively small in size and light in weight, easy to carry, and suitable for use in various scenarios such as homes, small conference rooms, and outdoors.
Connection methods: It has a variety of connection interfaces, commonly including HDMI, USB, VGA, etc., which can be connected to various devices such as computers, mobile phones, set-top boxes, DVDs, etc., making it convenient for users to play various contents.
System functions: Some S40 cannon projectors are equipped with intelligent operating systems and support functions such as wireless 投屏 and Bluetooth connection, making it more convenient to use. Some also have built-in speakers that can provide basic audio playback effects.
Applicable scenarios:
Home entertainment: Can be used for home theaters to watch movies, TV dramas, play games, etc. at home, bringing a large-screen visual experience to users.
Business office: It is convenient for business people to conduct presentations and sharing in scenarios such as business trips and small meetings, and can quickly display documents, pictures, videos and other contents.
Outdoor use: Due to its portability and certain environmental adaptability, it can also be used in outdoor camping, open-air parties and other occasions to play some entertainment videos or conduct outdoor teaching, display and other activities.
