X1 Gas Nitrogen Dioxide

X1 Gas Nitrogen Dioxide

X1 Nitrogen Dioxide (NO2) Sensor is a revolutionary state of art ElectroChemical sensor technology based, highly accurate, low power and compact Nitrogen Dioxide detecting sensor ideal for health, environmental, industrial and residential monitoring.

SKU: X1-GND-1v2 Category:


The X1 Nitrogen Dioxide (NO2) Sensor is a revolutionary sensor based on ElectroChemical technologies. It is highly accurate, has a low power consumption and compact form factor. The X1 Nitrogen Dioxide (NO2) Sensor is used to monitor NO2 from road traffic and other fossil fuel combustion processes.

This sensor is capable of measuring in a range of 0 to 5 ppm of NO2 in the air. It has a very low detection limit of <20 ppb along with a resolution of <20 ppb approximately.

This sensor is maintenance free and pre-calibrated, which ensures a hassle-free smooth operation. It has an expected operating life of more than 5 years without calibration which makes it an low maintenance investment.

Additional information


LoRaWan, Bluetooth, Wifi, Cellelur


Black, White


Use Cases

– Monitoring indoor pollution sources such as tobacco smoking and unvented cooking or heating appliances using gas

– Measuring NO2 exposure near busy roads

– Measuring exposure to NO2 arising from grain decomposing in silos

Technical Specifications

  • IP44 Rated – Rain and splash resistant casing
  • Aluminium and Polycarbonate construction
  • Size: Cylindrical 40mm (D) x 109mm (H)

Sensor Range

  • Measurement range: 0 to 5 ppm
  • Operating temperature: -40 to 50 °C
  • Operating humidity: 0-95 % (0 to 100% non-condensing intermittent)
  • Detection limit: <20 ppb
  • Resolution: <20 ppb


  • Xtensa® dual-core 32–bit LX6 microprocessor(s)
  • Micro-Python Operating System


  • RAM: 4MB
  • External flash: 8MB

 LoRa specification 

  • Semtech LoRa transceiver SX1276
  • LoRaWAN stack
  • Class A and C devices

LoRa Operating Frequencies

  1. 868 MHz (Europe) at 14dBm maximum
  2. 915 MHz (North and South America, Australia and NZ) at 20dBm maximum
  3. 433 MHz (Europe) at 10dBm maximum
  4. 470 – 510 MHz (China) at 14dBm maximum

LoRaWAN Regions

  1. AS923, AU915, EU868, US915


  • Supports narrowband LTE UE categories M1/NB1
  • Peak power estimations:

TX current = 420mA peak @1.5Watt

RX current = 330mA peak @1.2Watt

 WiFi Connectivity

  • MQTT Protocol Compliant
  • 802.11 b/g/n/e/i
  • 802.11 n (2.4 GHz), up to 150 Mbps
  • 802.11 i security features: pre–authentication and TSN
  • Wi–Fi Protected Access (WPA)/WPA2/WPA2– Enterprise/Wi–Fi Protected Setup (WPS)

 Bluetooth Connectivity

  • Compliant with Bluetooth v4.2 BR/EDR and BLE specification
  • Class–1, class–2 and class–3 transmitter without external power amplifier
  • Enhanced power control
  • +12 dBm transmitting power
  •  Adaptive Frequency Hopping (AFH)

Power Options

  • Rechargeable 18650 LiPo Battery 1

( 1 x 3400mAh batteries,3.7V operation)

 Mounting Kits

  • Quick Install Mounting Bracket

Security & Certification

  • 256-bit SHA, MD5, DES, AES Encryption
  • CE, FCC, IC and RCM certified
  • CE 0700

1: Estimated 1-year battery life at hourly measurement intervals

2: Devices are Either Cellular OR LoRa.


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The size of the Payload for this device is 16 bytes.

Please refer to this article to learn more about decoding a payload: Decoding a Payload

Sample Device Data:  

Voltage: 4106 mV
Message Number: 1
RSSI -(dB): 1
ErrorCode: 0

Sample Sensor Data:  

Gas(PPM): 1 ug/m^3
Temperature: 20.2 Degrees C