All-in-One Wireless Temperature and Humidity Data Loggers

All-in-One 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

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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 the 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. The battery life of the L type is four times longer than that of the normal type.

Measurement ChannelsTemperature 1ch
Humidity 1ch
Measurement RangeTemperature: 0 to 55°C
Humidity: 10 to 95%RH
AccuracyTemperature: ±0.3°C
Humidity: ±5%RH
LCD DisplayMeasurements, Battery Life Warning, etc.
Logging Capacity8,000 data sets
Recording Intervals15 choices from 1 sec. to 60 min.
Recording ModeEndless/Onetime
Comm InterfacesOptical, Short-Range Wireless
PowerLithium Battery, AC Adaptor
Operating Environment-40 to 80°C (-30 to 80°C during wireless communications)
DimensionsH:62mm × W:47mm × D:19mm, L type 6.5mm
Waterproof CapacityIP64
Battery LifeAbout 10 months
L Type: About 4 years
AccessoriesTemperature-Humidity Sensor, Lithium Battery (LS14250) or Large Capacity Battery Adaptor Kit (RTR-500B1),etc.