S31-CB - NB-IoT/LTE-M Outdoor Temperature and Humidity Sensor

The Dragino S31-CB is a Temperature and Humidity Sensor for NB-IoT and LTE-M. It is used to measure the surrounding environment temperature and relative air humidity precisely, and then upload to IoT server via NB-IoT/LTE-M network.

The temperature & humidity sensor used in S31-CB is SHT31, which is fully calibrated, linearized, and temperature compensated digital output from Sensirion, it provides a strong reliability and long-term stability. The SHT31 is fixed in a waterproof anti-condensation casing for long term use.

You can use various IoT Servers and different uplink methods including MQTT, MQTTs, UDP and TCP. 

The sensor node uses Quectel BG95-NGFF Multi-band LTE Cat M1/Cat NB2 module which can be used in most European countries. It has a card slot for an NB-IoT/LTE-M SIM card. Ask your mobile operator about availability of SIM cards, coverage, frequencies used and login procedures. See for example Deutsche Telekom IoT and 1NCE.

This device supports BLE for easy configuration and wireless OTA to update the firmware.

S31-CB is powered by 8500mAh Li-SOCI2 battery for many years of use. It has an external antenna and an IP66 enclosure.

More information is available on the website of Dragino.