Instructions

7
6. SAFETY INSTRUCTIONS
For safety instructions please refer to Part 1 of these operating instructions.
7. INSTALLATION PRECAUTIONS
Please study the manual to become familiar with all the specications and features of the system before
installation.
IMPORTANT NOTE TO INSTALLER
• The operation voltage of the DK-2800 MK-II series keypads consist of 12V/DC and 12-24V/DC versions while the
Split-Decoders DA-2800 and DA-2801 are 12-24V/DC.
• The operation voltage of the Split-decoded keypad system is 12V/DC only if the associated keypad is 12VDC
version.
• The operation voltage of the Split-decoded keypad system can be 12-24V/DC if the associated keypad is 12-24V/
DC version.
• Please consult your keypad manual for the correct Operation Voltage before applying power to the system.
Installation Location – The Keypad Unit
• The EM card reader is working at the frequency of 125Khz. Make sure the installation location has no equipment
generating strong low frequency electro-magnetic wave in the range of 100-200Khz.
• If more than one keypads working at the same frequency are installed closely in the near locations (for example,
a server keypad and an auxiliary keypad-reader are installed back to back inside and outside of the house on the
same wall), it is necessary to make sure they are at least 60cm (2 ft) apart from each other to prevent interference.
Installation Location – The Split-decoder Unit
• Do not install the decoder unit close to the electric power cables that emit strong electro-magnetic wave.
• The receiver unit of the DA-2800 is working at the UHF frequency band 433Mhz. To get best result of receiving the
signal from the remote keyfobs or the wireless keypad a correct installation location is necessary.
• Install it in a location inside the house facing to the open space and there has no strong RF equipment near it.
• Do not install it in a concrete room or under a concrete stair, which shortens the control distance.
Prevent Unintended Short Circuit
• In the previous experience, most of the damages caused in installation are accidentally touched of the components
on the circuit board with the wires carrying power. DO NOT apply power to the system while it is in installation.
• Check carefully all the wirings are correct before applying power to the keypad system for testing.