Mandolyn Electronic Technology Inc. WD633 ユーザーズマニュアル

button placement

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MINUTE/-/MIN:  shows minimum 
temperature; adjusts clock, alarm, date & 
year and temperature alarm values

MODE/SNOOZE:  scrolls through Clock 1 & 2, 

Alarm 1 & 2, Date & Year, and Temperature Alarm

(high & low) mode; snooze for alarm

SET:  changes channel and house code;

toggle between C and F

RESET: resets channel and house code

Battery compartment

LCD display

ALARM/(C/F): toggles between  C and  F, 12 and 
24 hour format, Alarm 1 & 2 on and off; disables 
(resets) high & low temperature alarms

CHN:  scrolls through remote channels (1 to 4); 
scrolls through local and remote channels (1 to 4) 
in (high & low) temperature alarm mode

HOUR/+/MAX:  shows maximum 
temperature; adjusts clock, alarm, date & 
year and temperature alarm values

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RE

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Wireless Weather Station

battery installation

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remove battery cover

2 AA size batteries (WD633)
2 AAA size batteries (WT260H) 
(included)
Insert between terminals observing 
proper polarity then replace cover

LOW BATTERY INDICATION:  

Press and hold MODE for 3 seconds to enter the clock setting mode 

    (the CLOCK 1 symbol appears and the time will flash)

    Press HOUR to set the hour and MINUTE to set the minute; 

    Press ALARM/(C/F) during clock setting, to change between 12 and 24 hour 
    display.  This also will end clock setting. 

    Press MODE or do not press any key for 1 minute to finish clock setting.

Scroll to Clock 2 mode using MODE

    Press + or - key to change the hour 
    (in one hour increments/decrements
     relative to Clock 1)

Learn function executes automatically and runs for approximately 3 
minutes when batteries are first installed in the receiver. 

Press and hold CHN for 3 seconds to start 

If a new remote transmitter is added or if signal is lost (outdoor display 
blinking), learn function must be executed again.

Within these 3 minutes, receiver picks up the temperature & 
humidity signals from remote transmitter and displays the readings.

Beep sound indicates that 
learn function has started

'Channel' symbol will flash and 
unit will beep as each remote 
transmitter is detected

Temperature & humidity readings of 
remote transmitter displays on the 
receiver.

    Scroll to Alarm1 mode (Alarm2 mode) 
    using MODE
    Press HOUR to set hour
    Press MINUTE to set minute
    Press ALARM to toggle alarm on and off
    When the alarm is set ON, the 'on' symbol will appear

            or         will flash
    Press SNOOZE to snooze the alarm for 5 minutes. 
    After that the alarm will sound again. 
    Press ANY other key will shut off the alarm.
    Without interruption, alarm will shut off automatically after one minute.

     Scroll to date mode using MODE  
     Press HOUR/+/MAX to set month
     Press MINUTE/-/MIN to set date 
     Weekday is automatically determined
     from the year/month/day setting

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setting remote transmitters

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3 5

4

1

1

Press RESET to start

House code will flash for 10 seconds

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2

* Use a different house code if your weather station detects other
   signals from neighboring sources
* Factory default: house code = 01 and channel = 01

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Select house code (1-15) by pressing SET

Channel will flash for 10 seconds

Select channel(1-4) by pressing SET

Remote transmitters for each receiver must 
be set to the same house code.

February will have either 28 or 29 days depending on the year setting

Receiver: Low battery indicator will flash continuously when batteries need replacing

Remote transmitter: Lo bat will appear on transmitter’s LCD along with a low battery 
indication next to the corresponding channel on the receiver’s LCD

Scroll to YEAR mode using MODE

Press + or - key to adjust year

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f

WD633

receiver

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f

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c

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1

A

*

B

C

D

Press CHN to toggle between Channel 1, 2, 3 and 4. 
T

emperature and humidity readings will alternate 

on the receiver.

Local temperature displays instantly after 
batteries are inserted.

Toggle between  C and  F by pressing 
C/F in either Clock 1 or Clock 2 mode.

Press MIN in Clock 1 mode to display 
minimum temperature and humidity

Press MAX  in Clock 1 mode to display
maximum temperature and humidity

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9

The moon phase is automatically updated 
according to the year/month/day. 

New Moon

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New Moon

1

Young Crescent

2

First Quarter

Waxing Gibbous

Full Moon

Waning Gibbous

Last Quarter

Old Crescent

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MOON PHASE

MOON PHASE

MOON PHASE

MOON PHASE

MOON PHASE

MOON PHASE

MOON PHASE

MOON PHASE

MOON PHASE

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2 6

3

MOON PHASE

Congratulations on your purchase of this 
weather station set, WD633 + WT260H.  
Please take the time to read and 
understand this manual so you can begin 
to enjoy the convenience and features this 
product has to offer.

Main Display Unit WD633:
* dual clock and dual alarm
* calendar (day/month/year)
* local temperature display
* receives and displays temperature and 

humidity from up to 4 remote transmitters 
via RF technology of 433MHz

* maximum/minimum temperature records
* temperature and humidity trend indicator
* weather report symbols
* moon phase symbols
* user-selectable 

C or F

* battery type: 2 x AA size

Remote Transmitter WT260H:
* drip-proof design with LCD
* temperature display in user-selectable C 

or F

* humidity display
* transmission range: up to 40 meters in 

open area

* battery type: 2 x AAA size

synchronization

WT260H 

remote transmitter

Note:
Min/Max readings are 
automatically cleared 
daily at 00:00

*

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2

4

1

3

MONDAY

CLOCK1

OUT

IN

C

B

A

D

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IN

MONDAY

Repeat steps        to        for all other channels if desired

Scroll to high temperature alarm mode using MODE

Press  + or - key to set the high temperature limit value

Select local channel or remote channel (1 to 4) using CHN

Press  MODE to finish

                                                  and                     or existing preset will flash

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Re-synchronize receiver by holding CHN
for 3 seconds until a beep is heard.

Ensure the remote transmitter is out of direct 
sunlight, and away from sources of heat.

- Repeat the learning procedures.
- Temperature may be below -30

transmitter

transmitter

transmitter

C.

- Batteries in remote 

 may need changing.  

- Move remote 

 closer to the receiver.

- Make sure remote 

 is away from sources  

  of electrical disturbance.

The temperature measurement of 
remote transmitter and receiver does
not match
.
Temperature reading of the outdoor 
remote transmitter seems too high.

Receiver is no longer receiving 
remote transmitter signals or display 

problem

solution

Weather Station Receiver WD633
- Battery Type: 2 X 1.5V AA batteries
- Operation Temp: 
- Temp. Range: 

  
- 

-5 C to +50 C

-9.9 C to +55 C

- Measurement Accuracy: Max. +/- 1 C 

within measuring range of 0 to 40 C
Resolution: 0.1C

Battery Type: 2 X 1.5V AAA batteries

- 

Temp. Range: -30

Operation Temp.: -20 C to +60 C

- 

C to +70C

- Temperature Resolution: 0.1 C for above -10 C / 
  1 C for below -10 C
- Measurement Accuracy: Max. +/- 1 C within 
  measuring range of 0 to 40 C
- Humidity Range: 25% to 90% RH (resolution 0.5%)
- Transmission Frequency: 433.92 MHz
- Transmission Range: up to 40 meters in open area

when temperature alarm sounds

    Press any key to stop temperature alarm; or 
    If no key is pressed, the temperature alarm will automatically stop itself after one minute.
    Once triggered, temperature alarm comes on as a distinctive sound, different to that of  
    Alarm1 and Alarm2.  

It is to alert that the temperature has exceeded the preset temperature limit.

low temperature alarm

You can set up to 5 high temperature alarms - one local
and one for each of the four remote channels

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5

Repeat steps        to        for all other channels if desired

Scroll to low temperature alarm mode using MODE

Press  + or - key to set the low  temperature limit value

Select local channel or remote channel (1 to 4) using CHN

Press  MODE to finish

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5

3
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5

high temperature alarm

You can set up to 5 low temperature alarms - one local
and one for each of the four remote channels

To disable particular alarm, press ALARM; dashes = alarm disabled

*

To disable particular alarm, press ALARM; dashes =  alarm disabled

*

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                                                  and                     or existing preset will flash

2

The trend indicator shows the trend of temperature and humidity
determined by the particular transmitter in the past half-hour interval.

The receiver is able to monitor and display the weather status based on 
collected data from Channel 1.

About Freeze Warning
* Snow symbol will flash to warn of 'freezing'.
* Activated when Channel 1's temperature is between -1.9 C and +2.9 C
* Snow will appear solid if and when Channel 1's temperature falls below -1.9 C.
Note:
* Initially, the weather will be cloudy
* Remote transmitter Channel 1 will be used for weather indication. 
* If Channel 1 is empty, then weather will always be cloudy. 
* If Channel 1 has no humidity data, weather indication will always be 
   cloudy, but freeze warning and snow indication will be available.

weather report symbols

Arrow Indicator

Rising

Steady

Falling

Trend

Freeze 
Warning

Weather 
Indicator

<flashing snow>

OR

temperature & humidity trend

Raining

Snowing

Sunny

Cloudy

This equipment has been tested and found to comply with the limits for a 
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 instructions, may cause harmful interference to radio 
communications. 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:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which 

the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

Warning:
Changes or modifications made to this equipment not expressly approved by 
the manufacturer may void the FCC authorization to operate this equipment.