Velleman HAA2801 - Manual (Page 7)

INSTALLATION
PRECAUTIONS
1) Installation Location:
The built-in receiver of the Access Controller is working at the UHF frequency band of 433Mhz. To
get the best receiving result of the signals from the remote keys a correct installation location is
necessary.
i) Install it on a location inside the house facing to the open space and there has no strong electro-
magnetic wave signals near it.
ii) Do not install it in a concrete room or under a concrete stair, which shortens the control distance.
2) Prevent Accidental Short Circuit:
In the previous experience, most of the damages caused in the installation are accidental touching
of the components on circuit board with the wires carrying power. Please be patient in the
installation. Study the manual to become familiar with the specifications of the system beforehand is
also important.
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.
SPLIT-DECODED MODE -- (for HAA2800 & HAA2801)
Split-decoded Mode needs at least one keypad to work with the decoder. The decoder decodes all the
commands from the keypad to operate its outputs. It is an unique solution to immediately up-grade
a general purpose keypad to a high security access control system. All the keypads in the HAA28xx
Series with Data I/O Port are compatible with the decoder. A Split-decoded system divides itself into
the outside keypad unit and the inside decoder unit. Any sabotage to the outside unit does not affect
the security of the inside unit.
7
RF WIRELESS
REMOTE CONTROL (DA-2800 ONLY)
DOOR LOCK
(OUTPUT 1)
SECURITY
SYSTEM (OUTPUT 2)
AUTOMATIC
OPERATOR (OUTPUT 3)
COMMON
GROUND
COMMON
GROUND
DA-2800 OR DA-2801
SLAVE 1
SLAVE 2
MASTER
DATA I/O
COMMON
GROUND
DATA I/O
DATA I/O
MAXIMUM 3 KEYPADS CAN BE CONNECTED IN PARALLEL