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Smartag RHT reusable temperature and humidity logger

Smartag RHT is a reusable recording temperature and humidity indicator. It records both air temperature and relative humidity — what storage rules require to be monitored in rooms for medicines. Built-in digital sensor, memory for 45,000 values, USB readout.

Smartag RHT reusable temperature and humidity logger with USB connector and LEDs
Smartag RHT: built-in temperature and humidity sensor, USB connector, three LEDs, Start/Stop button.

Applications

  • Medicine storage rooms: under Rules No. 260n humidity must not exceed 65 % unless the manufacturer states otherwise — Smartag RHT records both temperature and humidity.
  • Temperature and humidity mapping when the protocol sets humidity criteria.
  • Pharmacies and storerooms instead of a separate thermometer and hygrometer.
  • Transport of humidity-sensitive cargo.

Specifications

According to measuring instrument type description No. 91745-24 and manufacturer data.
Temperature measurement range−30 to +70 °C
Maximum permissible error, temperature±0.5 °C from −30 to +40 °C inclusive; ±0.7 °C above +40 to +70 °C
Relative humidity measurement range5 to 95 %
Maximum permissible error, humidity±5 %
Sensorbuilt-in digital, temperature and humidity
Memory45,000 values
Logging intervalconfigurable
Usereusable
Indicationthree LEDs, Start/Stop button
ConnectionUSB
Verification interval1 year
Verification procedureMP-779/01-2024
Operating conditions−30…+70 °C, 84–106.7 kPa, humidity 5–100 % non-condensing
Dimensions and weightmax. 89 × 52 × 40 mm, max. 55 g
Average service lifeat least 5 years
User softwareSmartag User, in Russian and English
Instrument typeSmartag recording temperature indicators, State Register No. 91745-24
ManufacturerHladverk Group LLC

How long the memory lasts

Calculated from the memory size stated by the manufacturer — 45,000 values per channel.
Logging interval45,000 values last for
1 minuteabout 31 days
5 minutesabout 156 days
10 minutesabout 312 days
15 minutesabout 15 months

How to use

  1. Set up

    Connect the device to a computer and set the logging interval, thresholds and delayed start in the software.

  2. Start

    Press Start or wait for the delayed start — the LEDs confirm that logging is on.

  3. Logging

    The device records values at the set interval; the LEDs show whether a threshold was exceeded.

  4. Report

    Connect to USB and save the report and data; record the serial number in the log.

  5. Next cycle

    Clear the memory and start again — the device is reusable. Keep track of the verification date.

Modifications with humidity have a 1-year verification interval (Smartag T has 2 years). Plan verification in advance so the device does not drop out of a mapping study.

Frequently asked questions

Is Smartag RHT reusable?

Yes. After a cycle the data is saved, the memory is cleared and the device is started again.

What is the humidity accuracy?

±5 % in the 5–95 % range. Temperature: ±0.5 °C from −30 to +40 °C.

How often is Smartag RHT verified?

Every year, like all Smartag modifications that measure humidity.

Need temperature and humidity monitoring? Tell us the rooms and quantity — we will select Smartag RHT.

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