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2. Pad-mounted transformer - Wikipedia

   en.wikipedia.org/wiki/Pad-mounted_transformer

   A padmount or pad-mounted transformer is a ground-mounted electric power distribution transformer in a locked steel cabinet mounted on a concrete pad. Since all energized connection points are securely enclosed in a grounded metal housing, a padmount transformer can be installed in places that do not have room for a fenced enclosure.

3. Wireless security camera - Wikipedia

   en.wikipedia.org/wiki/Wireless_security_camera

   Wireless security cameras are becoming more and more popular in the consumer market, being a cost-effective way to have a comprehensive surveillance system installed in a home or business for an often less expensive price. Wireless cameras are also ideal for people renting homes or apartments.

4. Closed-circuit television - Wikipedia

   en.wikipedia.org/wiki/Closed-circuit_television

   Early CCTV systems were installed in central London by the Metropolitan Police between 1960 and 1965. [16] By 1963, CCTV was being used in Munich to monitor traffic. [ 17 ] Closed-circuit television was used as a form of pay-per-view theatre television for sports such as professional boxing and professional wrestling , and from 1964 through ...

5. Cable television - Wikipedia

   en.wikipedia.org/wiki/Cable_television

   If the subscriber's building does not have a cable service drop, the cable company will install one. The standard cable used in the U.S. is RG-6, which has a 75 ohm impedance, and connects with a type F connector. The cable company's portion of the wiring usually ends at a distribution box on the building exterior, and built-in cable wiring in ...

6. Closed-circuit television camera - Wikipedia

   en.wikipedia.org/wiki/Closed-circuit_television...

   These cameras do not require a video capture card because they work using a digital signal which can be saved directly to a computer. The signal is compressed 5:1, but DVD quality can be achieved with more compression (MPEG-2 is standard for DVD-video, and has a higher compression ratio than 5:1, with a slightly lower video quality than 5:1 at best, and is adjustable for the amount of space to ...

7. Unit price - Wikipedia

   en.wikipedia.org/wiki/Unit_price

   The average price per unit can be driven upward by a rise in unit prices, or by an increase in the unit shares of higher-priced SKUs, or by a combination of the two. An 'average' price metric that is not sensitive to changes in SKU shares is the price per statistical unit. [1] Price per statistical unit

8. Cable television in the United States - Wikipedia

   en.wikipedia.org/wiki/Cable_television_in_the...

   HBO was the first true premium cable (or "pay-cable") network as well as the first television network intended for cable distribution on a regional or national basis; however, there were notable precursors to premium cable in the pay-television industry that operated during the 1950s and 1960s (with a few systems lingering until 1980), as well ...

9. Serial digital interface - Wikipedia

   en.wikipedia.org/wiki/Serial_digital_interface

   The various serial digital interface standards all use (one or more) coaxial cables with BNC connectors, with a nominal impedance of 75 ohms. This is the same type of cable used in analog composite video setups, which potentially makes for easier "drop in" equipment upgrades (though may be necessary for long runs at the higher bitrates for older oxidising or lower grade of cable to replaced ...