Can also be carried on board aircraft (RTCA standard cleared).
Setting, measuring, recording, and checking can be done by simply approaching the NFC communication reader (a computer with a FeliCa port is required separately).
Data is read by NFC communication (FeliCa), so it is easy to check the contents and send data to the server.
You can download the smartphone application and computer software from http://f-log.jp/ and the Android terminal (with NFC function) application from https://play.google.com/store/apps/details?id=watch_logger.appli&hl=ja for free.
Specification
Measurement items: Temperature and humidity
Temperature measurement range: -40 to + 80 degrees C
Temperature resolution: 0.1 degrees C
Temperature accuracy: +/- 0.3 degrees C (-10 to + 50 degrees C)/+/- 0.5 degrees C (other)
Temperature memory: 16000 data
Humidity measurement range: 0 ~ 99% RH
Humidity resolution: 1% RH
Humidity accuracy: +/- 5% RH
Temperature and humidity memory: 16000 data
Measuring intervals: 1 to 255 minutes (in 1-minute increments), 1 to 60 seconds (in 1-second increments)