> For the complete documentation index, see [llms.txt](https://docs.g-iot.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.g-iot.io/level-meter-full-device-guide-book/level-meter-handeling-information-book/level-meter-technical-specification.md).

# Level Meter Technical Specification

| Communication Interface | REST, MQTT-SN                                                                                                                                                                                                                             |
| ----------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Device Size             | 43.48 x 85.89 x 68.00mm                                                                                                                                                                                                                   |
| Weight                  | <200g                                                                                                                                                                                                                                     |
| IP Class                | IP65                                                                                                                                                                                                                                      |
| Operating Temperature   | Min -20°C Max 60°C (with Chip-SIM)                                                                                                                                                                                                        |
| Storage Temperature     | Optimum 20-30°C (with Chip-SIM)                                                                                                                                                                                                           |
| Operating Humidity      | 5% to 95% (non-condensing)                                                                                                                                                                                                                |
| Storage Humidity        | 5% to 70% (non-condensing)                                                                                                                                                                                                                |
| Number of SIM Slots     | 1x Chip-SIM                                                                                                                                                                                                                               |
| Power consumption       | Quiescent current < 15uA NB-IOT Transmission < 400mA NB-IOT Receiving current < 100mA Data acquisition current < 600mA Average power consumption 0.65mAh/day Typical battery lifetime > 5 years\@1.5 transmissions/day and 2 FOTA updates |


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