D20-NB - NB-IoT Waterproof Temperature Sensor

The Dragino D20-NB is a NB-IoT Temperature Sensor for Internet of Things solution. It can be used to measure the temperature of air, liquid or object, and then upload to IoT server via NB-IoT network.

The temperature sensor used in D20-NB is DS18B20, which can measure -55°C ~ 125°C with accuracy ±0.5°C (at -10°C to +85°C). The outside of the sensor cable is made of silicone,and the connection between metal probe and cable is double compress for waterproof, moisture-proof and anti-rust for long term usage. The length of the cable is 2 m and the rating is IP68.

D20-NB supports temperature alarm feature, user can set temperature alarm for instant notice.

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

The sensor node uses Quectel BC660K-GL Multi-band LTE Cat NB2 module which can be used in most European countries. It has a card slot for an NB-IoT 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.

D20-NB is powered by 8500mAh Li-SOCI2 battery and has an IP66 enclosure. It is designed for many years of use.

More information is available on the website of Dragino.