A Four Tech Co GK2124G 2.4G RF Keyboard User Manual
A Four Tech Co Ltd 2.4G RF Keyboard
User Manual
Wireless Keyboard
User’s Guide
Model: GK-21
www.a4tech.com
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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.
Federal Communications Commission Requirements
The equipment has been tested and found to comply with the limits for Class B Digital Device, pursuant to part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instruction, may cause harmful interference to radio
communication. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
z Reorient of relocate the receiving antenna.
z Increase the separation between the equipment and receiver.
z Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
z Consult the dealer or an experienced radio/TV technician for help.
THE CHANGES OR MODIFICATIONS NOT EXPRESSLY APPROVED BY THE PARTY RESPONSIBLE FOR COMPLIANCE COULD VOID
THE USER’S AUTHORITY TO OPERATE THE EQUIPMENT.
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.
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Knowing the keyboard
2.4GHz wireless technology with 16 channels and 1,048,576 ID
Codes
Errorless 2-Way Communication Technology
The 2.4GHz RF wireless technology is fine-tuned with 16 selected
channels and exclusive 1,048,576 ID-codes; it offers precise and
smooth wireless operation in active wireless environments. It allows
many wireless devices to operate simultaneously in one area without
interfering in the range up to 8-10 meters.
Errorless 2-way communication technology features error
correction capability that speeds up data transmission and
increases wireless precision. It saves valuable battery power
and cost.
Anti-interference with Auto Channel Hopping Technology
"Auto Channel Hopping" technology automatically detects and
secures available channels in the busy public 2.4GHz universal band.
It ensures better quality of wireless communication.
Specifications
RF Data Transmit Rate 2Mbps Frequency 2.402GHz～2.480GHz
ID Codes 1,048,576 sets Channels 16 channels
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Wireless Range
Any electrical device, such as the computer monitor, Zip drives, speakers, etc., can cause interference with the wireless keyboard. Most likely,
this will effect tracking of pointing devices or the range of the device. To make sure that your keyboard transmits and receives properly, refer to
the following instructions:
1. For optimal performance, place the receiver at least 8 inches (20 centimeters) away from
other electrical devices, such as the computer monitor, Zip drives, speakers…etc.
2. The effective distance of wireless keyboard should be no farther than 26-33 feet (8 -10
meters). This will ensure optimal communication between the keyboard and the USB
receiver.
NOTE: You should always get at least a 4 meters range. If you find that your cordless device gets less than 4 meters range, please
replace the batteries with a fresh set, perform the synchronization procedure for the keyboard and test the range again. If the range is still
below 4 feet, please test your device on another system, preferably in a different environment. If you find it gets the same range on
another system, please contact A4 TECH support to obtain information about a warranty replacement. However, if the range improves on
another system, then it may be an environmental variable. Use the suggestions above to resolve the environmental interference issue.
Keep 8 inches
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Operating Warnings: For optimal performance and RF (Radio Frequency) reception:
1. Avoid using the wireless keyboard on a metal desk or a desk with a metal frame can cause problems with pointing device behavior and
range.
Hardware Installation
Step 1: Inserting the Batteries
A. Press the tab on the battery cover
locates on the keyboard bottom
and remove the cover.
B. Insert the supplied batteries, making sure that the
positive (+) and negative (-) ends of the battery
match the polarity indicators inside the battery
housing.
C. Slide the batter cover back into its
position until it “clicks” firmly into place.
Step 2: Connect the Receiver
A. For Notebook computer:
Insert the USB receiver into the USB port of your Notebook
computer.
A. For PC computer:
Insert the USB receiver into the USB port of desktop computer or
via a USB HUB.
B. The USB receiver will automatically be recognized by your computer.
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C. Press the “connect” button on the USB receiver as shown,
the Green Power LED will light up, and starts “Blinking”.
D. Immediately Press the “connect” button on the bottom of the
keyboard, If you can’t find or see your keys on the screen, follow
the steps below:
1. Unplug and re-plug the receiver
2.Test the device on another USB port or computer.
Note: Removing the batteries will require you to synchronize it with the receiver again
the next time you turn it back on.
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● System Requirements：
To use the keyboard presenter, your computer must meet the following hardware requirements and
run one of the operating system listed below.
Hardware
□ IBM or Compatible PC
□ CD (User Manual on CD)
□ Hard Disk Driver
□ USB Port
Operating System
□ Windows 2000, XP, MCE2005, XP (x64), 2003(x64), and VISTA x86
● Package Includes：
□ 2.4GHz RF Keyboard
□ USB RF Receiver
□ 2 AAA Alkaline Batteries
□ CD (User Manual on CD)