| Description | Temp./Humidity sensor, Temperature (-20 to 85 C), Humidity (0 to 100 % RH) | GL840 Extension terminal base | Data logger with GS-CO2 Carbon dioxide sensor, 4.9MB on-board memory, micro-SD memory slot, micro-B USB PC interface, LCD display | Wireless Data logger with Thermistor input terminal (Thermistor (max. 120 C) of 4 ch), WLAN model, 4.9MB on-board memory, micro-SD memory slot, USB PC interface, LCD display | Battery pack for GL240, GL820, GL840 | Wireless Data logger with Illuminance/UV sensor, 4.9MB on-board memory, micro-SD memory slot, micro-B USB PC interface, LCD display |
| Additional information |
| Weight |
0.5 lbs |
| Dimensions |
6 × 8 × 4 in |
|
| Weight |
1 lbs |
| Dimensions |
6 × 8 × 4 in |
|
| Weight |
1 lbs |
| Dimensions |
6 × 8 × 4 in |
|
| Weight |
2 lbs |
| Dimensions |
6 × 8 × 4 in |
|
| Weight |
1 lbs |
| Dimensions |
6 × 8 × 4 in |
|
| Weight |
2 lbs |
| Dimensions |
6 × 8 × 4 in |
|
