• Wireless Temperature and Humidity Data Loggers

Wireless Temperature and Humidity Data Loggers

  • TandD - RTR-503- RTR-503L
  • External Temperature-Humidity Sensor
  • Measurement Range: Temperature: 0 to 55°C
  • Humidity: 10 to 95 %RH

All-in-One Temperature-Humidity Sensor

The RTR-503 logger has an external sensor for measuring temperature and humidity levels simultaneously. This unit is splash proof and holds up well in environments with harsh temperatures and humidity levels. It will work with any of the RTR-500 series data collectors.


  • Measurement Range: Temperature: 0 to 55°C
  • Humidity: 10 to 95 %RH
  • Wireless Collection of Recorded Data
  • Automatic Data Upload
  • Warning Monitoring Function

Collect Data via Wireless Communication with a Base Unit

Data loggers in our RTR-500 Series only function as Remote Units and need to be used with one of collection devices (Base Unit).(see complementary products tab)

The collected data can then be transmitted to a PC by a variety of methods such as USB, E-mail, or FTP. Moreover, various functions, such as the monitoring of current readings and warning notification, make it a powerful data management system. * Select a Base Unit according to the type and scale of the measuring environment.

L-type model

L-type model is designed with a large capacity battery pack. Battery life of the L type is four times longer than that of the normal type.

Measurement Channels Temperature 1ch
Humidity 1ch
Measurement Range Temperature: 0 to 55°C
Humidity: 10 to 95%RH
Accuracy Temperature: ±0.3°C
Humidity: ±5%RH
LCD Display Measurements, Battery Life Warning, etc.
Logging Capacity 8,000 data sets
Recording Intervals 15 choices from 1 sec. to 60 min.
Recording Mode Endless/Onetime
Comm Interfaces Optical, Short Range Wireless
Power Lithium Battery, AC Adaptor
Operating Environment -40 to 80°C (-30 to 80°C during wireless communications)
Dimensions H:62mm × W:47mm × D:19mm, L type 6.5mm
Waterproof Capacity IP64
Battery Life About 10 months
L Type: About 4 years
Accessories Temperature-Humidity Sensor, Lithium Battery (LS14250) or Large Capacity Battery Adaptor Kit (RTR-500B1), etc.