Expansion Module
Connector Cable
SIM Card Slot
SMA Connector
Host Controller
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NORVI Expansion Module

Adding functions for controllers - NORVI Expansion

  • NORVI Expansion modules for your advanced features requirements.

There are three types of NORVI Expansion  modules are available as follows;

  • LoraWan Expansions
  • Nb-IoT Expansions
  • Analog Input Expansions
4-20mA current input esp32
Loadcell input
LoRa communication
NB-IoT communication

Daisy-chain up-to 6 NORVI Expansion modules


NORVI Expansion port

  1. TXD0
  2. IO33
  3. RXD0
  4. Not Connected
  5. IO32
  6. IO0 BOOT
  7. IO17 SCL
  8. Not Connected
  9. IO16 SDA
  10. Ground
Industrial IoT Node


Expansion Modules for PLCs

Communication Expansion


LoRa communication


LoRa communicaon module with the RYLR896 transceiver provides ultra-long range spread spectrum communicaon and high interference immunity whilst minimising current consumpon. The module is cerfied by NCC and FCC.


  • Semtech SX1276 Engine 
  • High efficiency Power Amplifier 
  • 127 dB Dynamic Range RSSI
  •  Built-in and external antenna options
REYAX RYLR896 | 868 / 915 Mhz 
REYAX RYLR406 | 426 / 433 / 470 Mhz


NB-IoT communication


Nb-IoT communicaon module with the BC95-G provides ultra low power communicaon interface for NORVI controllers. The module supports the global bands making it applicable around the world with a super high sensivity.

I2C  Interface with controller 

  • extremely low power
  • Embedded Internet Services Protocols
  • Quectel Enhanced AT Commands
  • Built-in and external antenna options

Analog Expansion


4 X

Sink/Source Digital Inputs

4 channel 0 – 10V inputs with ADS1115 16 bit ADC provides high accuracy analog inputs.

I2C  Interface with controller 

  • Input voltage range upto 10V
  • Over voltage protection
  • Programmable Gain Amplifier 


4 X

4-20mA current input esp32

Sink/Source Digital Inputs

4 channel 0 – 10V inputs with ADS1115 16 bit ADC provides high accuracy analog inputs.

I2C  Interface with controller 

  • Maximum current 25 mA
  • Voltage upto 35 V
  • 10 Ohm Low impedance  


2 X

Sink/Source Digital Inputs

2 channel thermocuple interface, with cold juncon compensaon, straight temperature readouts with 0.25′ C resoluon.

I2C  Interface with controller 

  • Versions Available for Most Common Thermocouple Types: K-, J-, N-, T-, S-, R-, and E-Type
  • Detects Thermocouple Shorts to GND or VCC
  • Detects Open Thermocouple
  • Allows readings as high as +1800°C and as low as -270°C


2 X

Loadcell input

Sink/Source Digital Inputs

2 channel load cell interface with HX711 24 bit ADC

I2C  Interface with controller 

  • On-chip acve low noise PGA with selectable gain of 32, 64 and 128
  • Built-in power supply regulator for load-cell
  • Simultaneous 50 and 60Hz supply rejection
  • Selectable 10SPS or 80SPS output data rate

Why should choose NORVI Expansion ?

  1. Coverage and Range: LoRa (Long Range) technology excels in providing long-range communication capabilities, making it ideal for projects that require connectivity over large distances or in areas with limited infrastructure. NB-IoT (Narrowband IoT) operates on existing cellular networks and offers better coverage in urban areas but may have limitations in remote or rural locations.

  2. Power Consumption: NB-IoT typically consumes less power compared to LoRa, making it suitable for battery-operated devices or applications where power efficiency is critical. LoRa, on the other hand, is more suitable for applications where power consumption is less of a concern, but long-range communication is essential.

  3. Data Rate and Bandwidth: LoRa provides higher data rates and bandwidth compared to NB-IoT, allowing for faster transmission of large volumes of data. If your project requires high-speed data transfer, LoRa may be the preferred choice. However, NB-IoT’s lower data rates are often sufficient for applications that involve periodic transmission of small data packets, such as sensor readings.

  4. Cost: LoRa modules and infrastructure may have lower upfront costs compared to NB-IoT, as LoRa operates on unlicensed spectrum, reducing the need for expensive cellular subscriptions or infrastructure. Analog input expansions, depending on the specific components and implementation, can offer a cost-effective solution for projects with simpler requirements or budget constraints.

  5. Interference and Regulation: LoRa operates in the unlicensed ISM (Industrial, Scientific, and Medical) bands, which may be susceptible to interference from other devices operating in the same frequency range. NB-IoT operates on a licensed spectrum, providing better immunity to interference but requiring compliance with cellular regulations and potential subscription costs.

  6. Sensor Compatibility: Analog input expansions allow for direct interfacing with analog sensors, making them suitable for projects that require integration with a wide range of analog sensors without the need for additional digital conversion hardware. However, LoRa and NB-IoT modules may require additional sensors or interfaces to connect to analog sensors, adding complexity and cost.

Therefore, NORVI Expansion modules which have options to choose as communication expansion modules and Analog Input Expansion modules are ideal for your customized requirements.

Applications of NORVI Expansion

  • LoRa communications
  • NB-IoT communications
  • Simple process controller
  • Analog input
  • Temperature measurement 


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