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DALLAS iButton reader 

CZ-DALLAS

 

 

cz-dallas_en 04/11 

 

The DALLAS iButton reader is a device used for 
execution of the access control function. It is designed to 
read the unique iButton code. It can interface with the 
CA-64 DR expander for DALLAS iButton readers or with 
the ACCO-KPWG-PS and ACCO-KPWG access control 
modules. 
The reader has two-color (red and green) LED, which 
may be used for communication between the alarm 
control panel / ACCO access control module and the 
user. 
 
Explanations for Fig. 1: 
1 – LED 
2 – plastic pad 
3 – locking nut 
4 – electric cable 
 
 

1. Operation 

In order to get access, touch the iButton to the reader. You 
may also hold it for about 3 seconds. The type of response to 
touching the reader or holding the iButton depends on the 
settings of expander / ACCO access control module. 
Depending on the device to which the reader is connected, the 
data (read-out iButton code) will be sent: 

  by the expander to the control panel, which in reply to it 

will react according to the preprogrammed function and 
authority level of the user of the particular chip, e.g. it will 
release an electromagnetic door lock; 

  directly by the reader to the ACCO access control module, 

which after user identification, based on the DALLAS 
iButton, will execute functions available to the user. 

2. Installation 

The CZ-DALLAS reader is designed for mounting on walls down to 3 mm thick. It can also be installed 
outdoor, directly in the wall or door frame. In order to install the reader, drill a hole with a diameter of 
20 mm, put the reader into the hole and secure it from the inside with the fastening nut. In case of 
partitions having a larger thickness, it is possible to fasten the reader by means of a suitable mounting 
glue. 

3.  Connecting iButton reader 

The CZ-DALLAS reader cable consists of five electrical wires which should be connected to 
corresponding terminals of the CA-64 DR expander or the ACCO-KPWG-PS / ACCO-KPWG module, 

Fig. 2. DALLAS iButton. 

Fig. 1. DALLAS iButton reader. 

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