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Appearance Diagram and Part Names

To prevent any loss or damage to our customers, other people and/or property, 
and to ensure the proper use of our products we ask that before using our product 
you carefully read, understand and follow the safety rules and precautions for our 
products as outlined below.

Explanation of Warning Symbols 

Explanation of Picture Symbols

 DANGER

These entries are actions that 

absolutely under no circumstance 

should be taken. The taking of 

such an action may cause serious 

personal physical damage or 

death. 

Denotes an important 

warning or caution.

Denotes a forbidden action.

 CAUTION

These entries are actions that if 

taken may lead to physical injury 

or damage to persons or things. 

Denotes an action that 

must be taken.

 DANGER

Do not take apart, repair or modify the Unit.

Touching them may result in malfunction or unexpected accidents.

If water or a foreign object enters into the Unit, immediately turn OFF the power, remove 

batteries, and stop using.

Continued use may cause fire or electrocution.

Do not use this Unit in wet or humid places, such as a bathroom.

It may cause a fire or other trouble including malfunction. 

If water or a foreign object enters the case, immediately cease using it.

Store the Unit and accessories out of the reach of children.

Touching them may result in unexpected accidents.

If any smoke or strange smells are emitted from the Unit, immediately turn OFF the power, 

remove batteries, and stop using.

Continued use may cause fire or electrocution.

Do not drop the Unit, or expose the Unit to a strong impact.

If that happens to the Unit, immediately turn OFF the power, remove batteries, and stop using. Continued use 
may cause fire or electrocution.

When installing and using this product, make sure to follow all warnings and directions from 

your computer manufacturer.

 CAUTION

This Unit is not waterproof.

If the Unit gets dirty, wipe it with a clean cloth.

Harmful gases or chemicals may cause corrosion and/or other danger to the Unit. Also, by 

coming in contact with hazardous substances, harm may occur to the people handling the 

Unit. Therefore, do not use or store the Unit in any environment that is exposed to 

chemicals and harmful gases.
Battery life varies depending upon the type of battery, the battery performance, the 

measuring environment, and the frequency of communication.
Battery terminals may provide insufficient contact due to age or vibration.

This may lead to data loss.

Use the Unit in an environment within the operational range.

Condensation may occur when a Unit is moved from one environment to another where 

there is a great difference in temperature.
To prevent damage to the Unit from static electricity, remove static electricity from your 

body by touching metal around you (door knob, window frame) before touching the Unit.

Static electricity may cause not only damage to the Unit, but may cause breaks in or a loss of data.

If the Unit is not to be used for a long period of time, for safety reasons please remove the 

battery.

If left in the Unit, it may leak and lead to malfunctioning.Please use a new battery when you use the Unit 
again.

Do not store or leave the Unit in any place exposed to high temperature and high humidity.

If the Unit is not to be used for a long period of time, store it in a place with a normal temperature and without 
condensation with other items included.

Do not disconnect the communication cable during USB communication.

This may harmfully effect the Unit or your PC.

We shall not guarantee the operation of our device if you have connected it to your 

computer using a USB hub or a USB extension cable.
Please do not insert your fingers or any foreign objects into the sensor or USB connection 

jacks.
Do not use or store the Unit in any of the following places. Doing so may cause 

electrocution, fire and/or other adverse effects to the device and/or your computer.

-Areas exposed to direct sunlight

  This will cause the inside of the Unit to become overheated and may cause fire, deformation, and/or 
  other damage including malfunction.

-Areas prone to strong magnetic fields

  This may cause damage including malfunction.

- Areas exposed to water leakage 

  This may cause electrocution or other damage including malfunction.

- Areas exposed to excessive vibration 

  This may cause injury, malfunction, damage or loss of proper electrical contact.

- Areas near fire or exposed to excessive heat 

  This may cause damage including malfunction and deformation.

-Areas prone to dust and dirt

  This may cause damage including malfunction.

  Illuminance UV Recorder WL RTR-574 is a Data Logger, with built-in wireless communication capability, designed to measure and record 

Illuminance, UV Intensity, Temperature and Humidity at a set interval.

Recorded data can be downloaded from an RTR-574 Data Logger (Remote Unit) via wireless communication with a Base Unit; that data can then be viewed in a 
graph and/or saved to PC for analysis or sharing over a network. 

 

As a Remote Unit, RTR-574 requires a Base Unit to carry out wireless communication.  (Compatible Base Units: RTR-500, RTR-

500NW, RTR-500AW, RTR-500DC, RTR-500MBS-A)

 The 

RTR-574 can be operated with "RTR-500 for Windows" version 1.10 or later. 

When you use "RTR-500 for Windows", please check the software version by selecting "Version Info" in the [Help] Menu. The latest version of the software can be downloaded 
from our T&D Web Site.

 Before using an RTR-574, it is first necessary to install the USB Device Driver from the software that comes with the Base Unit. 

tandd.com

Shimadachi 817-1, Matsumoto, Nagano 390-0852  Japan

Facsimile: +81-263-40-3152    E-MAIL: support@tandd.com

REC Mark

The recording status is shown here.

  ON: Recording in progress.

  BLINKING: Waiting for programmed start.

  OFF: Recording has been stopped.

DATA

The number of recorded readings is shown in a scale here.  After every 

2,000 readings the scale is marked from left to right. Storage capacity is 

8,000 readings.

COM Mark

The communication status is shown here.

  ON: The Unit is connected to a PC with the USB cable.

  BLINKING: The Unit is in Wireless/USB/Serial communication.

Recording Mode

ENDLESS:

Upon reaching storage capacity of 8,000 readings, the oldest data is overwritten 
and recording continues.

ONETIME:

Upon reaching storage capacity of 8,000 readings, recording will automatically 
stop.

Battery Life 

Warning Mark

When it is time for the battery to be replaced, this mark will appear.

  Not ON: Ample battery power.

  ON: Time to change the battery.

Current Readings /

Messages Area

Normally, the current readings are shown here. Depending on the Unit’s 

status, operational messages may also be displayed.

Unit of 

Measurement 

Humidity: % ,  Temperature: ˚C / ˚F,   Illuminance: lx, Klx

Cumulative Illuminance: lxh, klxh, Mlxh

UV Intensity : mW/cm

2

Cumulative Amount of UV Light: mW/cm

2

h,  W/cm

2

h

 Antenna
 Sensor Jack
 POWER Button
 Operation Buttons

     (DISPLAY, INTERVAL, 

REC/STOP)

 USB Communication 

Cable Jack

 Battery Cover

Notices about this Manual

In order to properly use this product, please carefully read this manual before using. 

 

-

All rights of this Manual belong to T&D Corporation. It is prohibited to use, duplicate and / or arrange a part or whole of this Manual without the permission of T&D Corporation.

 

-

"TANDD",  "T&D" and the logo of T&D Corporation are all registered property of T&D Corporation.

 

-

Specifications, design and other contents outlined in this manual are subject to change without notice.

 

-

We are not responsible for any malfunction or trouble caused by the use of our product or by any problem caused by the use of measurement results of our unit. Please be fully aware of this before 

using our product.

 

-

On screen messages in this manual may vary slightly from the actual messages.

 

-

Please notify the shop where you purchased this product or T&D Corporation of any mistakes, errors or unclear explanations in this manual. 

 

-

T&D Corporation accepts no responsibility for any damage or loss of income caused by the use of our product.

 

-

This product has been designed for private or industrial use only. It is not for use in situations where strict safety precautions are necessary such as in connection with medical equipment, whether 

directly or indirectly.

 

-

This Manual cannot be reissued, so please keep it in a safe place. 

 

-

Please carefully read this Manual and Warranty.

Safety Precautions and Instructions 

* Please carefully observe the following safety measures when using our product.

18

55

78

60

[Unit : mm]

Cautions about using the Illuminance UV Sensors

Do not connect the ISA-3151 sensor to any data logger other than those specified by T&D 

Corporation.

Use the Unit in an environment within the operational range.

When measuring UV light or other light which may cause damage or injury to your eyes or 

skin make sure to use protection such as safety glasses or some type of light-proof shield.
Do not expose the sensor to a strong impact.

Cracks or scratches in the Illuminance sensor and / or in the UV sensor will adversely affect the measurement 
accuracy. Also, a broken sensor may result in injury.

This sensor is not waterproof. By all means do not allow it to get wet.

Do not expose to condensation, dampness, corrosive gases or organic solvents. Also, do 

not use in areas near fire or exposed to excessive heat.
When the Illuminance UV sensor is not being used, please store at room temperature to 

prevent condensation.
If the sensor surface gets dirty, wipe it with a soft cloth.

If the sensor surface accumulates impurities (dirt), it will cause a decrease in the sensor’s accuracy and 
sensitivity.

If you wish to extend the length of the sensor cable, please purchase and use our optional 

sensor extension cable (TR-1C30 / TR-5C10).

Do not cut or process the sensor cables.

Using the “Adjustment Function” in the software supplied with the Base Unit, it is possible to 

make desired adjustment settings to a sensor; these settings are saved directly into the 

sensor itself.Therefore, when a sensor is replaced, it is necessary to re-make any desired 

adjustment settings to be saved into the newly connected sensor.

Cautions about using the Temperature-Humidity Sensors

Do not connect the THA-3001/3151 sensor to any data logger other than those specified by 

T&D Corporation.

Use the Unit in an environment within the operational range.

When using the THA-3001/3151 sensor in an environment where the humidity is less than 

30%RH, the measurements may sometimes fluctuate. This is not abnormal.
If extremely severe temperature changes occur, the humidity measurements may appear 

abnormal.

Once the sensor's temperature becomes stable, the measurements will return to normal.

This sensor is not waterproof.

Only use in an environment where there is no condensation or possibility of becoming wet. Do not use in 
water or near areas where high-pressure water is flowing.

Do not expose to condensation, dampness, corrosive gases, or organic solvents.

When the sensor is not to be used for a long period of time, please store it at normal 

temperature and humidity.

During use, the surface of the temperature - humidity sensor will accumulate impurities (dirt) causing a 
decrease in the sensor’s accuracy and sensitivity. If the sensor is being used in an environment where smoke 
and dust are in abundance, periodic calibration may be required.

Do not use this sensor on a human body.

If you wish to extend the length of the sensor cable, please purchase and use our optional 

sensor extension cable (TR-1C30 / TR-5C10).

Do not cut or process the sensor cables.

Using the "Adjustment Function" in the software supplied with the Base Unit, it is possible 

to make desired adjustment settings to a sensor; these settings are saved directly into the 

sensor itself.Therefore, when a sensor is replaced, it is necessary to re-make any desired 

adjustment settings to be saved into the newly connected sensor.

 Wireless Regulations

CE Statement

The RTR-500 Series products are in compliance with the Radio Equipment 

Directive 2014/53/EU.

The following standards have been applied:

<Safety and Health>  EN 60950-1

 

EN 50663

<EMC> 

EN 301 489-1

 

EN 301 489-3

<Radio Spectrum> 

EN 300 220-2 (receiver category 2)

The full text of the EU declaration of conformity is available at the following 

internet address: 

http://cdn.tandd.co.jp/glb/manual/DoC_RTR500_Series.pdf

 Important Notice

Wireless products cannot be used in countries other than where those products have been 
approved for use, according to that country's wireless regulations.
T&D Corporation shall in no manner whatsoever take responsibility for the usage of these products, 
nor be liable in any manner for legal consequences stemming from the usage of these wireless 
products in unapproved areas.

Reading the LCD Display

  From hereafter in this manual, Illuminance UV Recorder WL 

RTR-574 will be referred to as the "Unit".

RTR-574 / RTR-574-S

Introductory Manual

Thank you for purchasing our product.
Carefully read this instruction manual before using this Unit.

RTR-574 Package Contents

Illuminance UV 

Recorder WL

RTR-574

Illuminance UV 

Sensor 

(ISA-3151)

Temperature 

- Humidity 

Sensor 

(THA-3151)

AA Alkaline 

Battery 

USB 

Communication 

Cable  (US-15C)

Introductory 

Manual 

(including 

Warranty)

RTR-574-S Package Contents

T

em

pe

ra

tu

re

 H

um

id

ity

 S

en

so

r

Illuminance UV 

Recorder WL

RTR-574

Illuminance UV 

Sensor 

(ISA-3151)

Temperature 

- Humidity 

Sensor 

(SHA-3151)

AA Alkaline 

Battery 

USB 

Communication 

Cable  (US-15C)

Introductory 

Manual 

(including 

Warranty)

© Copyright T&D Corporation. All rights reserved.            2020.08   16504670043 (8th Edition)

This is printed using recycled paper.

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