Access Control Readers
BLE Mobile / 125 kHz / 13.56 MHz
HAF Reader
Quick Start Guide
1.0 Introduction
A key component of a physical security electronic access control system, the Linear Access Control reader combines RFID and Bluetooth
technology. In operation it is capable of reading data stored on physical and/or mobile credentials via radio frequency without physical contact,
and then passing the data obtained to the physical access control system. Access control systems typically manage and record the movement
of individuals through a protected area, such as a locked door.
This Quick Start Guide is intended for experienced installing technicians. It is a basic reference to ensure all connections are properly made.
Models include Linear NBT125, BT125 and BT135. For additional information please reference Linear’s website www.linear-solutions.com.
2.0 Mounting Provisions
Each reader may be installed either indoors or outdoors, mullion-mount or singlegang mount.
wiring of systems must be done in accordance with National Electrical Code,
ANSI/NFPA 70. Use supplied #6 mounting screws, or equivalent security screws,
for installation.
3.0 Reader Wiring
Conductor Function
Red DC (8-14 VDC)
Black Ground
Green Data 0
White Data 1
Brown Red LED †
Orange Not Used
Yellow Not Used
Blue Beeper
Violet CSN Mode
Drain Shield Ground
Contact your access control system manufacturer for their specic requirements. Per the SIA’s Wiegand specication, maximum cable length
is 500 feet (152 m).
NOTE: Unused conductors should be trimmed, isolated and taped back to prevent unintended current ows. Apply positive voltage only to the
Red DC Conductor.
Please recycle any unused housing components. Installation and
NOTES:
Wiegand
† Single Line LED: This is the standard operating mode and does not make use of the Orange conductor.
While idle, the LED on NBT125 models is Red and ashes when a card is presented.
While idle, the LED on BT125 and BT135 models is Blue and ashes when a card is presented.
On all models, the LED turns green when the Brown Conductor is pulled low by the access control panel.
† † Sector vs CSN: The standard operating mode for BT135 readers does not make use of the Purple
conductor and will only output a smart card’s Sector data. Pulling the Purple conductor low (grounded) will
cause the reader to output a smart card’s CSN data.
4.0 Cable Requirements
For Cable runs of LESS THAN 300FT: 24 AWG minimum, multi-conductor stranded with an overall foil
shield, for example Belden 9535 or similar, supporting the ve conductors comprising the physical layer of
the Wiegand interface (power, ground, data 0, data 1, and/or beeper and LED). Alternatively, Belden 9539
(BT135 only)
† †
equivalent or higher quality, for all reader functions.
For Cable runs of 300-500FT: 22 AWG minimum, multi-conductor stranded with an overall foil shield,
for example Belden 8445 or similar, supporting the ve conductors comprising the physical layer of the
Wiegand interface (power, ground, data 0, data 1, and/or beeper and LED). Alternatively, Belden 83559
equivalent or higher quality, for all reader functions.
5.0 Output Formats
Wiegand (industry standard 26 bit Wiegand and custom Weigand formats):
NBT125-W, BT125-W, BT135-W
6.0 Grounding
Shield (drain) continuity must run from the reader to the access panel. Shield (drain) and reader ground must be tied together at the access
panel and connect to an earth ground at one point.
7.0 Power
Reader may be powered by the access panel. A Linear power supply is recommended for best operation.
8.0 Voltage
NBT125: 8 to 14 VDC, 80mA
BT125: 8 to 14 VDC, 60mA Typical, 120mA peak
BT135: 8 to 14 VDC, 60mA Typical, 250mA peak
Access Control Readers
BLE Mobile / 125 kHz / 13.56 MHz
Quick Start Guide
9.0 Connection
Connection must be done in accordance with NFPA 70. Do not connect to a receptacle controlled by a switch. Connect to a power limited DC
voltage source.
10.0 Troubleshooting
1. When the reader is rst powered on it will beep 4-times, and the LED will shine red or blue.
2. Presenting a supported access credential will result in the reader beeping and the LED ashing once.
NOTE: The access panel controls LED functionality, such as switching the LED to green.
If the reader does not recognize the card or tag (no beep, no LED ash) or exhibits short read range, please see the table below for possible
causes and solutions.
Possible Cause Corrective Action
Incorrect cabling Verify gauge, connections and cabling length
Not enough power 12 VDC recommended
Incorrect card used Verify if card technology is supported
Reader/access panel not properly grounded Earth ground needed - verify shield and reader ground are tied at access panel and connect to
ground at one point
Supply generating interference Linear power supply recommended, verify switching power supply before use
HAF Reader
Should any of the corrective actions mentioned above not improve performance, disconnect the reader from the access panel and power it with a separate power supply or 9 VDC
battery, and re-test card functionality. By powering the readers separately, most variables that may lead to reduced performance can be eliminated. Should the problem persist,
please contact Linear directly.
FCC compliance Statement: This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired operation.
Product can be used without license conditions or restrictions in all European Union countries, including Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Spain, Sweden, United Kingdom,
as well as other non-EU countries, including Iceland, Norway, and Switzerland.
This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is
subject to the following two conditions: (1) This device may not cause interference. (2) This device must accept any interference, including interference that may cause undesired
operation of the device.
L’emetteur/recepteur exempt de licence contenu dans le present appareil est conforme aux CNR d’lnnovation, Sciences et Developpement economique Canada applicables aux
appareils radio exempts de licence. L’exploitation est autorisee aux deux conditions suivantes: (1) L’appareil ne doit pas produire de brouillage; (2) L’appareil doit accepter tout
brouillage radioelectrique subi, meme si le broui llage est susceptible d’en compromettre le fonctionnement.
Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment
in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
Linear reserves the right to change specications without notice.
Equivalent Models: P-3500, CSB-3500, PB-3500
Many Linear Data Readers carry the following certications:
Destructive Level Line Security Endurance Standby Power
Level I Level I Level IV Level I
Operating Temperature: -31°F to +150F° (-35°C to +66°C)
Operating Humidity: 0% to 90% Relative Humidity
IP Rating: IP67
Access Performance Levels
Copyright © 2021 Nortek Security & Control LLC. All rights reserved. Linear is a registered trademark of Nortek Security & Control LLC
01673-002 Rev-B
Linear P/N:10030867 Rev-C
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