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20051 to 20100 of 22185 results  Page: << Previous 50 Results 400 401 [402] 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 >> Next 50 Results
Proximity Card Access Control System (3 suppliers)
Proximity Card Based Terminals (3 suppliers)
Proximity Card Based Terminals are used for access control & attendance recording. The feature includes RFID based card reader, trigger output to access control gates/locks, 4 reader access control panels and access control software.
Proximity Card Clocks (3 suppliers)
Proximity Card Reader (35 suppliers)
Proximity card readers carry information similar to what is carried on the magnetic card. The proximity card readers has a loop of wire sandwiched between layers of plastic in the card that acts as an antenna to receive signals from the reader. The antenna magnifies the signal and replies with data embedded in a microcomputer chip in the card. The reader in this case is called a proximity reader because the device doesn't have to actually touch the reader; it only has to come into the proximity of the reader. More data can be stored in the prox card than in the magnetic card and since the card doesn't have to touch the reader, it is slightly faster than the magnetic card. The prox card can also be installed outside with fewer problems than magnetic card readers. The credential of the prox card can be tied to a combination lock or other second verification that only the candidate knows, otherwise, whoever has the prox card can obtain access through doors locked and controlled by small proximity card readers.
Proximity Cards (20 suppliers)
Proximity cards or tokens do not need to touch a reader in order to validate a transaction. Their radio-wave transmission technology is highly secure and their readers can be hidden behind walls, in clean, maintenance-free, vandal-proof locations. Best, because proximity readers don't require contact, they speed the flow of human and vehicular traffic through checkpoints. These cards and tokens can remain in pockets, purses, or even on the front seats of vehicles and still be read by the system. Each proximity card contains a coil of wire that acts as both the receiving and transmitting antenna and a small, integrated circuit that is programmed with a unique ID code. These cards are powered by the voltage generated from a reader's magnetic field in relation to the card's antenna coil. Once energized by a reader, the card transmits its ID information. Transmission is so fast that access verification takes place in less than a quarter second. There are two types of proximity cards or tokens such as active and passive proximity cards.
Proximity Detection Systems (3 suppliers)
Proximity Drivers (1 supplier)
Proximity Key Intruder Alarms (3 suppliers)
Proximity Level Switches (1 supplier)
Proximity Limit Switch Knife Gate Valves (3 suppliers)
Proximity Probe Calibration Instrument (1 supplier)
Proximity Probe Housing (1 supplier)
Proximity Probes (1 supplier)
Proximity Probes (9 suppliers)
Proximity Programming Decks (1 supplier)
Proximity Readers (11 suppliers)
Proximity Sensor Limit Switches (1 supplier)
Proximity Sensor Signal Conditioners (30 suppliers)
Proximity Sensors (67 suppliers)
Proximity sensors are sensors that detect the presence of near objects without any physical contact. The maximum distance this sensor detects is defined as 'nominal range'. Proximity sensors offer a variety of ways to sense the relative position of specific machine elements requiring continuous monitoring.
Proximity Sensors (117 suppliers)
Proximity Sensors is a device that sense when one object is close to other object. They indicate only the presence or absence of an object within their sensing region but some can give some information about the distance between the object and the sensor as well. They are used for detecting the properties of the surface of an object without touching it. It is used in collision detection situations and in detecting approach situations for the arm.
Proximity Speed Sensor (1 supplier)
Proximity Speed Switches (1 supplier)
Proximity Switch Molded Onto Underwater Cable With Magnet Actuator (1 supplier)
Proximity Switch Mounts (1 supplier)
Proximity Switch Testers (1 supplier)
Proximity Switch Transducers (3 suppliers)
Proximity Switches (59 suppliers)
Proximity Switches are non contact type switches that are used to sense the presence or absence of an object without actually contacting the object. They combine high speed switching with small physical size.
Proximity Switches (79 suppliers)
Proximity switches are non contact-type switches that are used to sense the presence or absence of an object without actually contacting the object. Proximity switches combine high-speed switching with small physical size. In a proximity switch mode, a field amplitude threshold is set, below which a solid state switch changes the signal output from high to low or vice versa. In this manner, a digital signal is produced, which indicates whether a metal object has approached closer than a prescribed value.
Proximity Systems SPM - RPM (3 suppliers)
Proximity Systems SPM - RPM (1 supplier)
Proximity Time Attendance Clock (12 suppliers)
Proximity Transducer Systems (4 suppliers)
Proximity Vibration Transmitters (1 supplier)
Proximity Voltage Tester (2 suppliers)
Proxy Reader Entry Systems (1 supplier)
Pruner Snip (1 supplier)
Pruning Saw Blade (3 suppliers)
Pruning Saws (4 suppliers)
Prunners (2 suppliers)
Pry Bar With Handles (1 supplier)
Pry Bars (1 supplier)
Pry Lever Bar Dollies (1 supplier)
Prybar Holder With Lock & Key (1 supplier)
Prybar Holders (1 supplier)
Prylever Bars (1 supplier)
PS Resins (1 supplier)
PS2 & Parallel Wall Plates (1 supplier)
PS2 Keyboard and Mouse Cables (4 suppliers)
PSA Cloth Disc (3 suppliers)
PSA Disc Rolls (1 supplier)
20051 to 20100 of 22185 results  Page: << Previous 50 Results 400 401 [402] 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 >> Next 50 Results
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