Wireless data logger with Temp./Humidity sensor (-20-85ºC, 0.0- 100.0%RH), WLAN model, 4.9MB on-board memory, micro-SD memory slot, USB PC interface, LCD display.

The compact GL100 temperature humidity data logger sensor is designed for industries requiring climate monitoring and control such as greenhouse, hydroponics, agriculture and botanical rooms giving maintenance techs real time environment and climate monitoring solution. Fine arts museums and galleries are also served well for controlled environment settings where the GL100 excels! Remote real-time temperature humidity data monitoring is capable with the GL100 wireless model.

Relative Temperature and Humidity Sensor
Measurement Data
Temperature, Humidity, Dew Point Temperature (calculated value)
Accumulated Temperature ºCh
Accumulated Temperature only recorded
Measurement Range
±2G (20m/s2, ±5 (50m/s2, ±10 (100m/s2
(Gravitational Acceleration 1G=approx. 9.807m/s
Measuring Method
C-MOS sensor
Range of Temperature Measurement
-20ºC to 85ºC
Temperature Measurement Degree of Accuracy
-20 ≤TS < 0 ±0.8(ºC)
0 ≤TS < 60 ±0.5(ºC)
60 < TS ≤85 ±0.8ºC
Range of Humidity Measurement
0.0 - 100.0% RH
Humidity Measurement Accuracy
At 25ºC
±1.0% RH (0-10% RH)
±8% RH (10-20% RH)
±5% RH (20-80% RH)
±8% RH (80-90% RH)
±10% RH (90-100% RH)

Response Time (Temperature)
Temperature, Humidity: approx. 100 seconds to reach 63% at 25ºC with airflow speed of 1m/s(1)
Processor Functionality
Accumulated Temperature: 0 to 999,999kº ch(2)
Memory Capacity (Memory Mode)
16 | 32 | 64 | 128k sample
(Memory Mode)
OFF/10 | 25 | 50 | 100% of selected memory
Sampling Interval
0.5 | 1 | 2 | 5 | 10 | 20 | 30 sec
1 | 2 | 5 | 10 | 20 | 30 | 60 min
Temperature Unit of Denomination
ºC/ºF (selectable)
Waterproof protection filter at the connection point.
Operating Environment
Within range of Temp/Humidity measurement.(3)
External Dimensions
15mm x 45mm x 10.2mm (excludes protrusion)
Approx. 14g (0.49 oz)

(1) Varies by operating environment.
(2) Reset count at start of recording; exceeding or falling below standard temperature.
(3) With GL100 main unit.


Item Description
Number of channels Varies by the input module used, and measurement type is fixed with each input module
Input method, Type of input terminal
Output signal Alarm (1 channel), solid state switch with optical isolation (Optocoupler, Max. load is the 30 V, 50 mA)
Interface to PC USB (micro USB B type connector), Wireless LAN (WLAN) in GL100-WL
Wireless LAN (in GL100-WL) Standards: IEEE802.11b, Communication distance: approx. 40 m
* It varies by the condition of the LAN. Real-time transfer rate is up to 500ms. The WLAN is able to disable. (It is enabled in the factory default setting)
Storage device Built-in memory: RAM (Approx. 4.9 MB)
External memory: microSD memory card
* Maximum file size for captured data is 1.9MB. It is recommended to use the microSD memory card that supports sleep mode. (Example: TS4GUSDHC4, made by Transcend)
Display LCD (backlit monochrome, graphical type 128 x 64 dots)
Contents: Captured data and Setting menu (Stored data is not able to replay. It is able to replay using the PC application software.)
Functions • Real-time data capturing
• Display the captured data value to the LCD in real-time and save the monitoring values
• Set conditions using the Menu setting
While using USB port:
• Output captured data in real-time
• Output the saved data from the internal memory
• Full control of the GL100 from the PC application software
While using Wireless LAN (in GL100-WL):
• Output captured data in real-time
• Output the saved data from the internal memory
• Full control of the GL100 from the PC application software
• Simple control of the GL100 from the application software of Smart Device
• Send warnings via the e-mail
Alarm • Action
Outputs the signal when the measuring data reaches the present conditions of alarm
• Source
Level of measuring data
• Detecting method
Condition: Higher or lower (signal is higher or lower than the threshold)
Combination: OR
Trigger • Action
Start or stop the recording of captured data by trigger
• Source
Start trigger: OFF, Level (*), Alarm, or Date
Stop trigger: OFF, Level (*), Alarm
* Level trigger is available in the analog input of the GS-4VT, GS-4TSR, and GS-3AT module.
• Detecting method of the Level (*)
Condition: Rising or Falling (signal is passed through the threshold)
Combination: OR or AND
Dustproof and waterproof IP54 compatible (*)
* It is effective only in the condition that the input module is set to the GL100 and then the covers of connector and battery are closed. It is recommended to replace the packing of cover in periodically.
Power source • Alkaline battery (AA size x 2)
• USB bus-power (5V, 200 mA) (*)
* When AC adapter for USB device is used, the required power capacity is 5V, 1A. Battery and AC adapter is not included.
Operating environment Temperature: -10 °C to 50 °C
Humidity: up to 80 % RH (non condensed)
External dimension [W x D x H] Approx. 66 x 100 x 27 mm (exclude protrusion)
Weight GL100-N: Approx. 125 g, GL100-WL: Approx. 130
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