Keri Systems NXT-4R, NXT-4RE Specsheet

NXT - 4R

Proximity Reader

• Vandal resistant proximity reader for high crime areas

• Bullet proof and  ame resistant

• Virtually impossible to pry o 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

• Supervised by Controller for immediate noti cation of
failure or removal

The NXT 4R Proximity Reader is designed for areas where crime and vandalism are a constant threat to the access
control system’s card readers. The outside housing is made of stainless steel and is beveled such that it is nearly
impossible to get su cient leverage to pry it o a wall or mullion. The portion of the face of the reader that covers
the electronics consists of many layers of interwoven  berglass that is UL 752 listed for bulletproof integrity. The
reader can withstand 9mm bullets at a “point-blank”  ring 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  eld proven in its ability to function in open, hostile environments.

The NXT 4R is for use exclusively with Keri’s 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 identi cation 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.

2305 Bering Drive  San Jose, California 95131
408-435-8400  Toll Free: 800-260-5265  Fax: [phone]

NXT 4R - Proximity Reader

DATA SHEET, Page 2 of 2

Speci cations:

Size

5.25” H x 2.0” W x 0.75” D
(13.3 cm x 5.1 cm x 1.9 cm)

Read Range

Up to 1 inch (2.5 cm)

Weight

15.4 oz. (431 g)

Input Power

10 -14 VDC @ 85 mA typical

Operating Temperature

-40° F to 149° F
(-40° C to 65° C)

Material

Surrounding Body:
Stainless Steel
Face:
Fiber-Tex®
(UL 752 listed)

Interface

• 4 conductor,
2 twisted pairs,
shielded

• CAT-5, shielded

a

b

Warranty

Limited Lifetime Warranty
against defects in materials
and workmanship

a) Read range is stated in a clean RF and electrical environment using NXT-C cards presented parallel to the reader surface with the reader

operating at 12 VDC. Read range may be a ected by local installation conditions. Read range will be less when mounted on metal.

b) The use of a linear power supply is always recommended.

Presented By:

PN: 01788-004 Rev. E