Description
NB-IoT temperature sensors are used for remote temperature monitoring, in places where constant supervision is required, such as medical refrigerators, pharmaceutical wholesalers, museums, archives – especially suitable for monitoring distributed objects (transformer stations, pumping stations).
Efento NB-IoT sensors transmit the data over cellular network (Narrowband IoT) and do not require any additional devices (router, gateway, etc.). Sensors are also equipped with Bluetooth Low Energy interface, which allows quick and easy configuration with a smartphone. Efento NB-IoT sensors can be integrated with any cloud platform.
Devices analyse the data and send it to cloud platform when needed. This allows to decrease the number of cellular transmissions and increase the battery lifetime. There are several types of analyses that can be performed by the sensor: from a simple comparison of the measured value to the threshold to more complex mathematical operations.
All the settings of the NB-IoT sensors can be changed remotely in a secure way. This allows you to easily reconfigure thousands of the deployed devices, no matter how far they are located.
The Internet of Things is about integrating data sources, analysing the data and drawing conclusions based on it. If you want to integrate Efento loggers with your software, cloud platform or mobile application, we will provide you with the necessary documentation, libraries, SDKs and we will gladly assist you.
At the customer’s request, each Efento sensor can be supplied with a calibration certificate in accordance with ISO / IEC 17025. The test is performed in an external, ILAC certified laboratory.
Technical data
| Model | 1 | 2 | 3 | 4 |
| Sensor type | internal sensor | external sensor | external sensor | external sensor |
| Temperature range (°C) | -15 to 70 | -55 to +125 | -200 to +200 | -70 to +450 |
| Temperature accuracy (°C) | 0.4 | 0.5 in the range -10°C to +85°C and up to 2 outside | 0.5 at 200 °C, 1.3 at -200 °C | 0.3 at 0°C, 1.8 at 300 °C |
| Temperature resolution (°C) | 0.1 | |||
| Drift | 0.1 °C/year | |||
| Measurement interval | 1 minute to 10 days, configurable | |||
| Memory | 40 000 values | |||
| NB.IOT | B8 and B20, on request: B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B66, 3GPP: Release 13, Power: 23 dBm ±2 dB | |||
| Bluetooth LE | Radio module frequency: 2,4 GHz, Range: up to 100 m (LOS), Power: 2,5 mW (4 dBm), transmision period: 1 s | |||
| Communication | Protocol: CoAP; Trasnsmission interval: 5 minutes – 10 days, configurable | |||
| Software update | Over the air (with delta mechanism); Over Bluetooth Low Energy | |||
| Power supply | package of 3 x AA, 6300 mAh (replaceable), Battery operating time: up to 5 years, USB 5V with 1000 mAh rechargeable battery |
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| Dimensions | 124x60x26 mm | 20x45x85 mm | 124x60x26 mm | 124x60x26 mm |
| Weight | 0.13 kg | 0.08 | 0.14 | 0.14 |
