The unibody model debuted in October 2008 in 13- and 15-inch variants, with a 17-inch variant added in January 2009. Called the "unibody" model because its case was machined from a single piece of aluminum
Home System
Home automation or domotics is building automation for a home, called a smart home or smart house. A home automation system will monitor and/or control home attributes such as lighting, climate, entertainment systems, and appliances. It may also include home security such as access control and alarm systems.
With a wireless security camera, the video signal—and, with some, the audio signal as well—transmits over the internet or other wireless network to a receiver that connects to your viewing and recording device.
Your speaker is waterproof, splash resistant, and dust proof. It is rated IP67 and IP64. You can immerse the speaker in water for up to 30 minutes at a depth of up to 3.3 ft (1 m). It can also be used while showering and in the rain or snow.