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A fan controller with LEDs indicating fan status and potentiometers and switches to control fan speeds. Another method, popular with PC hardware enthusiasts, is the manual fan speed controller. They can be mounted in an expansion slot or a 5.25" or 3.5" drive bay or come built into a computer's case. Using switches or knobs, attached fans can ...
A junction for road vehicles and pedestrians controlled by traffic lights in the UK. The various vehicle and pedestrian movements are separated in either time or space for safety and efficiency. The normal function of traffic lights requires more than sight control and coordination to ensure that traffic and pedestrians move as smoothly, and ...
Lighting control system. A lighting control system incorporates communication between various system inputs and outputs related to lighting control with the use of one or more central computing devices. Lighting control systems are widely used on both indoor and outdoor lighting of commercial, industrial, and residential spaces.
DMX512 is a bus network no more than 400 metres (1,300 ft) long, with not more than 32 unit loads (individual devices connected) on a single bus. If more than 32 unit loads need to communicate, the network can be expanded across parallel buses using DMX splitters. Network wiring consists of a shielded twisted pair, with a characteristic ...
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6-Pack Plug-in Nightlights. $8 $10. Save $2 with Prime. If your house is too dark at night, help is here. Automatic sensors turn these LED cuties on when there's no more light. They're tiny but ...
Traffic light. An LED 50- watt traffic light in Portsmouth, United Kingdom. Traffic lights, traffic signals, or stoplights – also known as robots in South Africa [ 1][ 2] and Namibia – are signaling devices positioned at road intersections, pedestrian crossings, and other locations in order to control the flow of traffic.
One person was critically injured in a stabbing at Miami International Airport late Saturday evening, prompting the evacuations of two concourses, according to the Miami-Dade Police Department.