Keri Systems NXT-4R Proximity Reader

  • MPN: NXT4R
  • JMAC ID: 200284369
$541.00
JMAC_ID:
200284369
df_manual_boost:
1.75
The NXT 4R Proximity Reader is designed for areas where crime and vandalism are a constant threat to the access control systems card readers. The outside housing is made of stainless steel and is beveled such that it is nearly impossible to get sufficient leverage to pry it off a wall or mullion. The portion of the face of the reader that covers the electronics consists of many layers of interwoven fiberglass that is UL 752 listed for bulletproof integrity. The reader can withstand 9mm bullets at a point-blank firing range and will not be burned by common cigarette lighters, both which are typical sources of vandalism.

Many applications do not lend themselves to concealment of a reader inside or behind a wall, so the reader must be exposed to the environment. Exposed readers traditionally have invited vandalism, resulting in higher cost to the building owner because of constant replacement, inconvenience and lack of security for users due to system down time. The NXT 4R is field proven in its ability to function in open, hostile environments.

The NXT 4R is for use exclusively with Keris revolutionary access control system based on the NXT Series of IP-based Controllers. With an allowable cabling distance of 1,000 feet from the controller and using just 4-conductor or shielded CAT-5 cable, the NXT 4R dramatically reduces cabling costs when compared to traditional 6 or 7 conductor reader interfaces. Encrypting identification data between the card and reader and supervising the reader from the controller to check for failure provides the most secure reader solution available. The NXT 4R is compatible with all NXT Series Cards and Tags.


Also known as: KSI-NXT4R

Technical Specifications:
  • Interface: 4 conductor, 2 twisted pairs, shielded; CAT-5, shielded
  • Material: Surrounding Body - Stainless Steel, Face: Fiber-Tex (UL 752 listed)
  • Operating Temperature: -40° F to 149° F (-40° C to 65° C)
  • Input Power: 10 -14 VDC @ 85 mA typical
  • Weight: 15.4 oz. (431 g)
  • Read Range: Up to 1 inch (2.5 cm)
  • Size: 5.25” H x 2.0” W x 0.75” D (13.3 cm x 5.1 cm x 1.9 cm)


For more information about the Keri Systems NXT4R, please contact us.
  • Supervised by Controller for immediate notification of failure or removal
  • Vandal resistant proximity reader for high crime areas
  • Bullet proof and flame resistant
  • Virtually impossible to pry off a wall or mullion
  • Field proven in the toughest environments
  • Perfect for inner city housing projects
  • Encrypted data between Reader and Card or Tag
  • 1,000’ (300 Meters) wiring distance from Controller
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