When.com Web Search

  1. Ads

    related to: magnetic proximity switch alarm controller for car antenna kit

Search results

  1. Results From The WOW.Com Content Network
  2. Parking sensor - Wikipedia

    en.wikipedia.org/wiki/Parking_sensor

    The electromagnetic parking sensor (EPS) was re-invented and patented in 1992 by Mauro Del Signore. [2] Electromagnetic sensors rely on the vehicle moving slowly and smoothly towards the object to be avoided. Once an obstacle is detected, the sensor continues to signal the presence of the obstacle even if the vehicle momentarily stops.

  3. Induction loop - Wikipedia

    en.wikipedia.org/wiki/Induction_loop

    An induction or inductive loop is an electromagnetic communication or detection system which uses a moving magnet or an alternating current to induce an electric current in a nearby wire.

  4. Proximity card - Wikipedia

    en.wikipedia.org/wiki/Proximity_card

    A proximity card or prox card [1] also known as a key card or keycard is a contactless smart card which can be read without inserting it into a reader device, as required by earlier magnetic stripe cards such as credit cards and contact type smart cards. [2] The proximity cards are part of the contactless card technologies.

  5. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    This switch operates with an electrically conductive switch that is either normally open or normally closed when under the influence of a magnetic field in respect to proximity to the second piece, which contains a magnet. When the magnet moves away from the reed switch, the reed switch either closes or opens, based on the normally closed or ...

  6. Inductive sensor - Wikipedia

    en.wikipedia.org/wiki/Inductive_sensor

    An inductive proximity sensor is a non-contact electronic proximity sensor. It is used for positioning and detection of metal objects. It is used for positioning and detection of metal objects. The sensing range of an inductive switch is dependent on the type of metal being detected.

  7. Zero speed switch - Wikipedia

    en.wikipedia.org/wiki/Zero_speed_switch

    Zero speed switches (ZSS) also known as Speed Actuating Sensing Switches [1] are used to detect whether a rotating shaft is turning (even at very slow speeds) [2] in various machines, conveyors, power plants, and in industries involving the production of cement, sugar, textiles, paper, etc. Zero speed switches mainly use electromechanical, electronic, or magnetic proximity technologies.