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The life cycle of the battery is very important to the lifetime of the light and the capacity of the battery will affect the backup days of the lights. There are two types of batteries commonly used in solar-powered street lights- gel cell deep cycle batteries as well as lead acid batteries.
The panel can be illuminated by fluorescent light bulbs or LED lighting strips. The efficiency of light boxes improved dramatically after the introduction of LED technology. The user inserts a graphic, which can be changed easily. Some light boxes are designed especially for outdoor purposes so they are more weatherproof. [citation needed]
Wireless light switches eliminate the wire from the light to the switch location. This is useful in remodelling situations where new wiring can be a hassle. Rather than tearing down a wall to gain access to the wires, a wireless switch can be used. This avoids any need to access wires and makes remodelling fast and simple.
It may be used to power a remote control receiver so that when infrared or radio-frequency signals are sent by a remote control device, the equipment can respond, typically by changing from standby to fully on mode. Standby power may be used to power a display, operate a clock, etc., without switching the equipment to full power.
NASA spin-off technologies are commercial products and services which have been developed with the help of NASA, through research and development contracts, such as Small Business Innovation Research (SBIR) or STTR awards, licensing of NASA patents, use of NASA facilities, technical assistance from NASA personnel, or data from NASA research.
The 50 Hz versions were capable of shooting 25-frame/s progressive video, recording it within interlaced stream using progressive segmented frame technique. The 60 Hz versions were able to shoot and record native 24-frame/s progressive video, which was an unusual feature for a consumer camcorder though it is only available with x.v.color. [21] [22]
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It has a removable battery pack on its rear strap, which is hot-swappable; the headset contains a limited battery backup. [54] The headset can be used with a traditional headstrap, or with a glasses frame similar to the Vive Flow (used with an external power supply). [54] [53] Eye tracking and face tracking accessories are also available. [54]
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