INSTALLATION
DK-2882A / DK-2882B -- Surface Mount Version
DK-2882C / DK-2882D -- Flush Mount Version
PRECAUTIONS
1) Prevent Interference:
The EM Card reader is working at the frequency of 125Khz. Installation precautions are necessary.
i) Make sure the location for installation has no strong low frequency electro-magnetic wave signals. Especially in
the range of 100-200Khz
ii) If there is more than one keypads with the same operation frequency installed closely in the same
location, make sure that they are at least 30-60cm (1-2ft) apart from each other to prevention interference.
2) Prevent Accidental Short Circuit:
In the previous experience, most of the damages to the keypad are in the installation due to accidental touching of the
components on circuit board with the wires carrying power. Please be patient and also study the manual to become
familiar with the specifications of the system before starting the installations.
i) Do not apply power to the system while it is in installation.
ii) Check carefully all the wirings are correct before applying power to the system for testing.
PACKAGE CONTENTS
• One DK-2882 Keypad
• Two EM cards
• One pack of Mounting Screws
• One Centre Pin Torx Screw Wrench
• One Wire Harness ( SIx wires)
• One Programming & Installation Manual
Plastic back box
Plastic inner box
Steel Box
Faceplate
Faceplate
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An inter-lock system needs two door controllers. This application example uses two DK-2882 with simple cross wire
connection on their "Output 1 Inhibit" and "Inter-lock Control Output" terminals. It is necessary to
link up the "(-) GND" terminals of the two keypads as common ground to achieve the inter-lock logical functions.
Use keypad to open the door from outside
Press egress button to open the door from inside
Connect the door magnetic sensors on the doors to monitor their positions
While door 1 is open, then, door 2 is forced to keep close, or vice versa
Use N.O. Relay output for fail-secure lock; and N.C. output for fail-safe lock
Please also see the "NOTE" stated in the Application Example (1)
3) BASIC WIRINGS OF AN INTER-LOCK SYSTEM USING TWO KEYPADS
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