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Technical characteristics
TypeLOB-GW-WMBUS-NB2
DescriptionLobaro Wireless M-Bus NB-IoT Gateway V2 
Cellular NB-IoT / LTE Cat. M1 Modem
LTE SiPNordic nRF9160
Antenna
  • Internal Monopole
  • On Request: External Antenna (SMA female)
Supported LTE Band
  • Standard: B8, B20 (791 MHz - 969 MHz)
  • Other Bands on request
SIM card slot4FF (Nano SIM)
Supported LTE modes
  • Narrowband IoT (NB-IoT)
  • LTE Cat-M1  (on request)
Data Upload
  • Secure CoAP over DTLS (via Lobaro IoT Platform)
  • Plain UDP (any Platform)
Firmware Features
  • Certificate based authentication and encryption
  • Remote configuration (via Lobaro IoT Platform)
  • Remote firmware update (via Lobaro IoT Platform)
LoRaWAN Fallback Upload
LoRaWAN ProtocolClass A  LoRaWAN 1.0.2 EU868
Activation methodOver-the-air activation (OTAA)
Activation by personalization (ABP)
Typically RF range≤ 2km2 km
Ideal RF range≤ 10km 10 km (free line of sight)
TX Power≤ 14 dBm
Wireless M-Bus communication
Antenna
  • Internal Monopole
  • On Request: External Antenna (SMA female)
Frequencies868.3 MHz, 868.95 MHz
Supported wireless M-Bus modes

Unidirectional 868 MHz modes according to EN13757-4:

  • C1 / T1 (combined) 
  • S1

Proprietary formats:

  • Xylem SensusRF (Bubble Up)
Telegram storage size

64 kByte storage

  • up to 500 telegrams (avg. size 100 Byte)
  • 218 telegrams à 255 Byte (max telegram size)
Maximum white list sizeminimum 150 different meters (2 KByte config size)
White list filters
  • Meter ID
  • Manufacturer code (M-Field)
  • Meter type (e.g. only water meters) 
Supported meters per gateway
  • Standard: 500
  • On request: up to 1.000
EncryptionAES128 (Mode 5 + Mode 7)
RF reception range
  • up to 100m 100 m under ideal conditions
  • Indoor ≤ 30m30 m
  • One Gateway every 2nd or 3rd Floor
Firmware features
  • Configurable wireless M-Bus collection intervals
  • Automated upload of all received telegrams
Additional I/O
Local configuration portPC based initial configuration via USB adapter
LEDRGB Led to signal different operating modes
Power Supply
Supply Voltage ConnectionJST-XH connector
Nominal Supply Voltage3.6V6 V
Supply Voltage Range

3.3V 3 V - 5V5 V

Battery empty at ~3.2V2 V

Std. Power supplyLobaro ER34615M 3.6V primary battery (D-cell)
Current consumption @3.6V
Normal / Idle≤ 3 mA
Wireless M-BUS RX≤14 mA
LTE (NB-IoT, LTE Cat-M1) TX≤ 500 mA
Sleep with RTC running≤10 µA
Mechanical dimensions
Size130 mm x 82 mm x 55 mm (incl. DAE)
Weight220g 220 g (excl. Battery) + Battery: ca. 114g114 g
Housing MaterialIndustrial polycarbonate
RatingIP67 including pressure compensating element
Environmental Requirements
Operating temperature range-20°C 20 °C to +55°C55 °C
Operating rel. Humidity20 - 70 % fR, non-condensing
Max. Installation height2mConformity

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  • EN 300 220-1 (RF)
  • EN 300 220-2 (RF)
  • EN 301 908-1 (RF)
  • EN 301 908-13 (RF)
  • EN 301 489-3 & EN 301 489-52 (EMC)
  • EN 62368-1 (Electrical Safety)
  • EN 62311:2008 (Electrical Safety)
    • EN 50581 (RoHS)2 m