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Clicker — a line of universal garage door remotes. Chamberlain, LiftMaster, and Craftsman have interchangeable parts, primarily the gear and circuit boards. The greatest difference between the brands is that Chamberlain and Craftsman operate on a square shaped split-rail system, while LiftMaster consists of one single solid piece of inverted ...
Electric eye for a garage door opener. An electric eye is a photodetector used for detecting obstruction of a light beam. An example is the door safety system used on garage door openers that use a light transmitter and receiver at the bottom of the door to prevent closing if there is any obstruction in the way that breaks the light beam.
Philips Norelco is the American brand name for electric shavers and other personal care products made by the Consumer Lifestyle division of Philips. [ 1 ] [ 2 ] For personal care products marketed outside the United States, Palau, Micronesia, and the Marshall Islands, Philips used the Philishave trademark until 2006.
The simplest sensor consists of a light beam aimed across the opening: when the beam is broken by an obstacle, the operator prevents the door from closing. Infrared and radar safety sensors are also commonly used. Other sensors such as resistance-sensing motors can be used to reverse the closing action of the door after an obstacle is encountered.
A door operator may use sensors to prevent the door from coming into contact with a user. Full Energy operators require at least 3 sensors. Low-energy operators are not required to have safety sensors, as the door is allowed to come in contact with a user, given that the kinetic energy of the moving door is limited by the reduced moving speed.
Philips had been in the broadcast market for many years with a line of PC- and LDK- Norelco professional video cameras and other video products. By the 1980s, the Norelco name was dropped in favour of Philips. Robert Bosch GmbH's Fernseh Division also had a long history going back to the early days of television (1929).