NB-IoT / LTE-M 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 sensors transmit the data over cellular network (Narrowband IoT and LTE-M) 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 / LTE-M sensors can be integrated with any cloud platform.

TEMPERATURE SENSOR
Range: -35° to 70°C
Accuracy up to 0.25°C in the -20°C to +70°C range and 0.5°C in the -35°C to -20°C range
Resolution: 0.1°C
Drift: -0.1°C / year
Measurement interval: 1 minute to 10 days, configurable
Memory size: 60 000 measurements

LTE band (FDD)
LTE band (FDD): 8, 20, devices working on other bands available on request
3GPP: Release 13 (LTE-Cat M1)
Power: 23 dBm (LTE-M NB-IoT)

BLUETOOTH LE
Radio module frequency: 2,4 GHz
Power: 2,5 mW (4 dBm)
Range: up to 100 m (LOS)
Transmision period: 1 s

COMMUNICATION
Protocol: CoAP; Trasnsmission interval: 5 minutes – 10 days, configurable

SOFTWARE UPDATES
Over the air (with delta mechanism); Over Bluetooth Low Energy

BATTERY
Battery: 2 x AA 3,6 V, capacity 4 200 mAh (replaceable)
Battery operating time: up to 10 years

DIMENSIONS
27 x 71 x 71 mm