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Coded panels were the earliest type of central fire alarm control, and were made during the 1800s to the 1970s. A coded panel is similar in many ways to a modern conventional panel (described below), except each zone was connected to its own code wheel, which, depending on the way the panel was set up, would either do sets of four rounds of code until the initiating pull station was reset ...
Smoke detector mounted on a ceiling. A smoke detector is a device that senses smoke, typically as an indicator of fire.Smoke detectors/alarms are usually housed in plastic enclosures, typically shaped like a disk about 125 millimetres (5 in) in diameter and 25 millimetres (1 in) thick, but shape and size vary.
A zone valve is a specific type of valve used to control the flow of water or steam in a hydronic heating or cooling system. In the interest of improving efficiency and occupant comfort, such systems are commonly divided up into multiple zones. [ 1 ]
Area code 432 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Texas in the Permian Basin and Trans-Pecos areas (excluding the El Paso metropolitan area), including the cities of Midland, Odessa, and Alpine.
The long wheelbase luxury model, "Statesman by GMH" consisted of one body style (four-door sedan) and was available in two trim levels. Statesman; Statesman Deville; A Holden SS sedan was released in August 1972. [2] Although marketed as a separate model in reality it was a Belmont V8 sedan fitted with the XV2 option package. [3] [4]
The 70-centimeter or 440 MHz band is a portion of the UHF radio spectrum internationally allocated to amateur radio and amateur satellite use. The ITU amateur radio allocation is from 430 to 440 MHz; however, some countries, such as the United States, allocate hams 420 to 450 MHz.
The additional waveform generator (WFG) is needed to 'create' the desired images for use in the airplane. To power the display unit, a three phase 115 VAC 400 Hz including neutral and a 28 VDC signal have to be supplied to the display unit. The CRT version has a Low Voltage Power Supply (LVPS) for creating the needed low voltage signals.
Fielded in 1991, the Night Attack Harrier was the first upgrade of the AV-8B. It differed from the original aircraft in having a forward-looking infrared (FLIR) camera added to the top of the nose cone, a wide Smiths Industries head-up display (HUD), provisions for night vision goggles, and a Honeywell digital moving map system. The FLIR uses ...
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