NB-IoT (Narrow Band-Internet of Things) technology is a new IoT technical branch and supports cellular data network connection of low power consumption device in WAN (Wide Area Network), which also called as LPWAN. NB-IoT operates in authorized frequency spectrum. It can be directly deployed to GSM, UMTS, LTE without any interference of current networks, while the bandwidth consumption is just about 180KHz.

FEATURES
Operating Voltage: 5V (NOTE: The module will consume great amount of current immediately when connected to the network. So the external power supply is needed at work.)
Input Voltage: 7~12VDC (VIN range: 6~20V)
Communication Module: SIM7000
Single-Band TDD-LTE B39
Quad-Band FDD-LTE B1/B3/B5/B8 (SIM7000C)
Quad-Band FDD-LTE B3/B8/B20/B28 (SIM7000E)
GPRS/EDGE 900/1800 MHz
Output power- GSM900: 2W- DCS1800: 1W
Control Via AT Commands
Operation temperature: -40'" to +85'"
GNSS (GPS, GLONASS, BeiDou, Compass, Galileo, QZSS)
Firmware update via USB 2.0
Support SIM card and NB-IoT card (NOTE: Please ensure the SIM frequency range been used is included in the frequency range it supports).
BME280 Environmental Sensor 
Temperature Measuring Range: -40'"~+85'", resolution of 0.1'", deviation of 0.5'"
Humidity Measuring Range: 0~100%RH, resolution of 0.1%RH, deviation of 2%RH
Pressure Measuring Range: 300~1100hPa
Humidity Sampling Time: 1s
Operating Temperature""'-30'"~+85'"
Dimension: 2.1 x 2.7inch /53.4 x 68.6mm