Retekess T128 User manual

W AT C H W IR E L E S S
CALLING RECEIVER
U S E R M A N U A L
T128

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Watch wireless calling receiver
I Preface
The product concentrates the technology of wireless transportation,
digital identify, dot matrix LCD display and microprocessor together to
realize the functions of time display and wireless calling. The product
uses removable rechargeable battery with long standby time and safe
charging circuit.
The fashionable watch design makes it widely used in restaurants,
bars, cafes, hospitals, hotels, and factories and so on.
II Feature
• RF wireless technology
• Fashionable watch design
• Dot matrix LCD screen
• Up to 999 channels
• Call button data pin support for custom
• Call button words selectable
• Single or list display mode
• Accurate time display
• Vibration/Buzzer prompt
• Low-power indication
• Built-in removable rechargeable battery

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III Technical Data
1) Working voltage: DC3.7V rechargeable Li-poly battery
2) Working frequency: 433.92MHz
3) Working current: 57mA±10mA (buzzer mode)
95mA±10mA (vibration mode)
4) Standby current: <8mA
5) Power-off current: 180±5μA
6) Receiving sensitivity: -108dBm
7) Decoding: learning code
8) Modulation: AM
IV Diagram
1. Diagram of function
Saturday
28/07/2018 17:17
00
Power capacity
Set / OK
Up
Down
Power / Back
Signal
LED Indicator
Power in
(back side)
Date & Time
Week

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V operation
Setting key, confirm key, choose bit key
Increase or decrease number; check up and down history call
Exit setting; cancel key (can cancel call number from screen)
1 Add caller
1. Press “ ” key showing “add caller ”
2. Press “ ” key to confirm , showing “add 0001 ID”
3. Press “ ” key and “ ” key to choose number you need.
“ ” key use for adjusting the number you need in setting state. Use
“ ” key can choose from “0-9” and “A-Z”. “ ” key is use for
selecting the bit in setting
4. Press any key on the transmitter till you hear a di sound and “done”
words show in screen. While number will goes to next one. For example,
choose “0001”, and press call key from button. When saving is
successfully; the receiver will have di sounds and “done” words show in
screen. Number will show 0002. You can go on press button to save next
number, till all number save.
5. When all finished, press “ ” to exit the setting state.
2 Delete caller
1. Press “ ” showing “add caller ”
2. Press “ ” key to choose “ delete caller”
3. Press “ ” to confirm, showing “ delete single” and “delete all”
4. Press “ ” to choose delete single or delete all
5. If choose “delete dingle” press “ ” to confirm, screen show 0000.
You can choose the number you want to delete and long press “ ” till

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screen show removed. It means you have been deleted this number.
6. If choose “delete all” pls long press “ ” till screen show removing all
and removed .it means you have been delete all number.
7. When all finished, press “ ” to exit the setting state.
3 Key function
4 Work mode (According to keys of button to choose what’s mode
need.)
1. Press “ ” key showing “add caller ”
2. Press “ ” key to choose “ word mode ”
3. Press “ ” to confirm, screen show “single key” and “mulit-key”
4. Choose the one you need and Press “ ” to confirm.
5. When all finished, press “ ” to exit the setting state.
5 Display Mode
1. Press “ ” key showing “add caller ”
2. Press “ ” key to choose “ display mode ”
3. Press “ ” to confirm, screen show “ live view” “queue view”
4. Choose the one you need Press “ ” to confirm. “live view” means,
when No.1 No.2 No.3 call in turn, screen is show 0003 0002 0001.
Newest call number show on the top
of screen. “queue view” means, when No.1 No.2 No.3 call in turn, screen
is show 0001 0002 0003. Oldest call number show on the top of screen.
5. When all finished, press “ ” to exit the setting state.
6 Prompt mode
1. Press “ ” key showing “add caller”
2. Press “ ” key to choose “prompt mode ”

3. Press “ ” to confirm, screen show “light vibration sound”
4. Choose the prompt mode you need and Press “ ” to confirm
6. When all finished, press “ ” to exit the setting state.
7 Prompt timing
1. Press “ ” key showing “add caller”
2. Press “ ” key to choose “prompt timing”. It can choose from 01-99
seconds.
3. Choose the time you need, and press “ ” to confirm.
4. When all finished, press “ ” to exit the setting state.
8 Remove timing
1. Press “ ” key showing “add caller”
2. Press “ ” key to choose “remove timing”
3. Press “ ” to confirm, can choose from 00-99. 00 means cycle
mode, all number will keep in screen, until cancelled by yourself. For
01-99 means, how long call number will disappear automatic.
4. Choose the number you need. Press “ ” key to confirm
5. When all finished, press “ ” to exit the setting state.
9 Cycle timing
1. Press “ ” key showing “add caller”
2. Press “ ” key to choose “cycle timing”
3. Press “ ” to confirm, can choose from 00-99. For example, if you
choose 10 seconds. It means each 10 seconds number will cycle one
time.
4. Choose the number you need. Press “Press “ ” key to confirm
5. When all finished, press “ ” to exit the setting state.
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VIII Packing List
1) Watch receiver 1pc
2) USB cable 1pc
3) User manual 1pc
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10 Date &Time
1. Press “ ” key showing “add caller”
2. Press “ ” key to choose “date & time”
3. Press “ ” to confirm. You will see current time (hours; minutes;
seconds and DD/MM/YY). “ ” they can adjust number. “ ” it can
let your choose from hours to minutes to seconds and to day to month to
year.
4. Choose the date & time you need and press “ ” to exit the setting
state. Then you will see screen show the time just now you choose.
11 keyboard set
12 Language
13 factory reset
1. Press “ ” key showing “add caller”
2. Press “ ” key to choose “factory reset”
3. Press “ ” to confirm, screen show confirm reset? yes/no
4. Choose Yes and Long Press “ ” to confirm till screen show factory
resetting.
5. When all finished, press “ ” to exit the setting state.

VII FAQ
WARNINGS
RF ENERGY EXPOSURE AND PRODUCT SAFETY GUIDE
This radio uses electromagnetic energy in the radio frequency (RF)
spectrum to provide communications between two or more users over a
distance. RF energy, which when used improperly, can cause biological
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Some call button
has less distance
Battery of call button
is close to empty
The watch receiver
cannot be charged
Call buttons cannot
be paired
The frequency is not
same or OSC resistor
is correct.
Change the correct
frequency and OSC
resistor.
LCD has no display
Check the bat voltage;
Check the screen cable
Charge the battery;
Change the screen cable
Change the battery
of call buttons
Check power adapter;
The battery is broken
Change power adapter;
Change the battery
Before using this radio, read this guide which contains
important operating instructions for safe usage and RF
energy awareness and control for compliance with
applicable standards and regulations.

damage.
All Retekess radios are designed, manufactured, and tested to ensure
they meet government-established RF exposure levels. In addition,
manufacturers also recommend specific operating instructions to users
of the radios. These instructions are important because they inform
users about RF energy exposure and provide simple procedures on how
to control it.
Please refer to the following websites for more information on what RF
energy exposure is and how to control your exposure to assure
compliance with established RF exposure limits: http://www.who.int/en/
Local Government Regulations
When radios are used as a consequence of employment, the Local
Government Regulations requires users to be fully aware of and able to
control their exposure to meet occupational requirements. Exposure
awareness can be facilitated by the use of a product label directing users
to specific user awareness information. Your Retekess radio has a RF
Exposure Product Label. Also, your Retekess user manual, or separate
safety booklet includes information and operating instructions required to
control your RF exposure and to satisfy compliance requirements.
Radio License (if appropriate)
Governments keep the radios in classification, business radios operate
on radio frequencies that are regulated by the local radio management
departments (FCC, ISED, OFCOM, ANFR, BFTK,Bundesnetzagentur...).
To transmit on these frequencies, you are required to have a license
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issued by them. The detailed classification and the use of your radios,
please contact the local government radio management departments.
Use of this radio outside the country where it was intended to be
distributed is subject to government regulations and may be prohibited.
Unauthorized modification and adjustment
Changes or modifications not expressly approved by the party responsi-
ble for compliance may void the user’s authority granted by the local
government radio management departments to operate this radio and
should not be made. To comply with the corresponding requirements,
transmitter adjustments should be made only by or under the supervision
of a person certified as technically qualified to perform
transmitter maintenance and repairs in the private land mobile and fixed
services as certified by an organization representative of the user of
those services. Replacement of any transmitter component (crystal,
semiconductor, etc.) not authorized by the local government radio
management departments equipment authorization for this radio could
violate the rules.
FCC Requirements
• 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.
• This equipment has been tested and found to comply with the limits for
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