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Announcing our New RTR-574 Illuminance UV Data Logger Wireless for US

Date Issued: September 05, 2010

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The RTR-574 wireless Illuminance UV Recorder can simultaneously measure and record four items: Illuminance, Ultraviolet Light (UV), Temperature and Humidity. In addition to these, the RTR-574 is also capable of displaying Cumulative Illuminance and Cumulative UV Light in the LCD display.

Using with a Base Unit allows for the monitoring and managing of recorded data and current readings via your PC.
As recorded data and current readings can be sent to a specified address via e-mail or a specified folder via FTP it is possible to easily share data across a network.

As data can be easily downloaded via wireless communication with a compatible Base Unit there is no need to physically gather the data loggers.

Compatible Base Unit:

RTR-500 Wireless Base Station
RTR-500NW/RTR-500AW Network Base Station (Coming Soon)


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Application Examples


FCC model for US
Measurement Items Illuminance UV Intensity Temperature Humidity
Number of Channels 1 Ch 1 Ch 1 Ch 1Ch
Unit of Measurement lx, Klx mW/cm2 °C, °F %
Display Range of
Cumulative Measurement
0 to 90,000,000 lx.h 0 to 62W/cm2.h - -
Measuring Accuracy 10 to 100,000 lx: +/-5%
(At 25°C, 50%RH)
0.1 to 30mW/cm2: +/-5%
(At 25°C, 50%RH) *1
Avg. +/-0.3°C +/-5% (At 25°C, 50%RH)
LCD Refresh Interval 1 second (At a recording Interval of 1 second)
2 seconds (At a recording interval of 2 seconds or more)
Recording Intervals Select from 15 choices:
1, 2, 5, 10, 15, 20 and 30 seconds /1, 2, 5, 10, 15, 20, 30 and 60 minutes
Storage Capacity Up to 8,000 readings (One reading is a set of data which includes Illuminance, UV Intensity, Temperature, and Humidity measurements.)
Recording Mode Endless : Upon reaching storage capacity, the oldest data is overwritten and recording continues.
One-time: Upon reaching storage capacity, recording will automatically stop.
* When using RTR-500NW or RTR-500AW as a Base Unit, only “Endless” can be selected.
* When using an RTR-500 as a Base Unit, possible to select from either “Endless” or “One-time".
LCD Displayed Items *2 Recording Status, Amount of Recorded Data, Communication Status, Recording Mode, Battery Life Warning,
Current Readings (Illuminance / UV Intensity / Temperature / Humidity), Cumulative Measurements (Cumulative Illuminance and Cumulative Amount of Ultraviolet Light), Unit of Measurement
Communication Interface Short Range Wireless Communication,
USB / RS-232C(Serial) Communication
Communication Time When downloading one Remote Unit at full storage capacity:
Wireless Communication = about 4 minutes *3
USB Communication = about 45 seconds
Wireless Specifications FCC Part15 Section247 / IC RSS-210 (Frequency Range: 902 to 928MHz)
Wireless Transmission Range About 150m(500ft) if direct and unobstructed.
Power AA Alkaline Battery (LR6) x 1
Battery Life About 4 months *4
Dimensions H55 x W78 x D18 mm (excluding protrusions) / Antenna Length: 60mm
Weight About 68g
(including AA Alkaline Battery / excluding sensors)
Operating Environment Temperature: -10 to 60°C
Humidity: 90%RH or less (no condensation)
Others Not waterproof, moistureproof, or dustproof.
In order to download data via wireless communication, it is necessary to purchase a Base Unit:RTR-500, RTR-500AW, RTR-500NW

*1: Compared to the value measured by the T&D standard sensor for calibration under our calibration light source.

*2: Up to four digits are valid for the Current Readings and Cumulative Measurements.

*3: The same amount of time will be necessary for each added Repeater.

*4: Battery life varies depending upon the measuring environment, the communication frequency, and the quality of the battery being used.