S40 Series

Available today as pulse counting, light pulse counting, temperature or temperature and relative humidity nodes, S40 Series covers most of the needs for metering or environmental monitoring applications

Available today in Wireless M-Bus or LoRaWAN, S40 Series is available with internal or external antennas

Key features of the S40 series

  • IP68-rated, tiny, automotive-grade, non-flammable (UL 94’s V-0), UV-resistant, 30% fibreglass-reinforced polyamide, casing
  • Single C battery-operated for longer life than mostly AA battery-operated competitors
  • One- or two-metre-long 3 wire harness with tampering detection
  • SMA antenna connector for antenna remoteness and / or use in better-penetration VHF spectrum
  • ‘Tropicalised,’ non-potted, design for proper disposal and, if need be, replacement of the battery / repair
  • Optional DIN Rail clip / mounting bracket

LoRa Node

    Overview for LoRa Node

    Wireless Technologies


    • Full compliance with Open Metering System (“OMS”) specification
    • Bubble-Up® operation with Listen Before Talk (“LBT”) for approx. ten-year lifespan while performing twelve hourly readings in the UHF spectrum
    • Very fine granularity, perfectly suited to Energy optimization markets
    • Remote node reconfiguration
    • Easy, LED-assisted, initial configuration via magnetic keys


    The LoRaWAN™ specification is a Low Power, Wide Area (LPWA) networking protocol designed to wirelessly connect battery operated ‘things’ to the internet in regional, national or global networks, and targets key Internet of Things (IoT) requirements such as bi-directional communication, end-to-end security, mobility and localization services.

      Features & Specifications for LoRa Node



      • 219 µA current
      • 0.2 mW max. power
      • 670 µF capacitance
      • 330 mH inductance
      • 25 ms max. pulse duration
      • 15 Hz max. frequency


      • 219 µA current
      • 0.2 mW max. power
      • 670 µF capacitance
      • 330 mH inductance
      • 25 ms max. pulse duration
      • 15 Hz max. frequency
      • -50°C ~ +150°C with ±0.3°C accuracy from -20°C to +110°C and at ±0.5°C accuracy otherwise.


      • 0%RH ~ 100%RH w/ ±3.0% accuracy and -40°C ~ +123.8°C w/ ±0.4°C accuracy at 25°C
      • 0%RH ~ 100%RH w/ ±1.8% accuracy and -40°C ~ +123.8°C w/ ±0.3°C accuracy at 25°C


      (f1) UV-resistant per UL 746C, HB non-flammable per UL 94, polycarbonate plus polybutylene terephthalate (“PBT+PC”)
      44 x 73.3 x 44 without connectors
      Approx. 180 g; commercial flight-friendly 15-piece SPQ (< 5 kg)
       Operating: -20 °C ~ +70 °C

      Storage: -40 °C ~ +85 °C

      30.6 Wh, non-rechargeable, lithium thionyl chloride C battery
       32-bit ARMâ Cortex™-M3 architecture; running at 40 MHz

      Built-in *128 KB* Flash memory and 32 KB RAM

      Built-in cryptographic engine supporting (i) AES 128- and 256-bit keys; and (ii) ECC B/K163, B/K233, P192, P224, P256; and (iii) SHA-1 and SHA-2 (SHA-224 and SHA-256)

      Immersion at up to, per IEC 60529 standard:

      1.0 metre for up to forty minutes (external antenna models); or

      1.2 metre for up to one hour (internal antenna models)

      PCB/A conformally coated against condensation, if the case arises

      Yes, courtesy of a network-adjustable RTC with a less than three (3) seconds per month drift
      4 [resp. 48] records, in case of S41 [resp. S47]
      Hardware-assisted AES128, in case of S41 only
       S41: fifteen (15) years with a 15-minute transmission cycle

      S47: twelve (12) years with a 30- (models 03, 04; 08; 01, 07, 10, 11) or 60-minute (models 06; 02, 05, 09) transmission cycle

      On / Off; Reset
      One, white
      Adjustable over the air in one-minute increments, from 2 mn to 1,440 mn; factory-set at 15 [resp. 30] mn in case of S41 [resp. S47]
       Over-the-air activation (OTAA)

      Activation by personalisation (ABP)

      External (left) and internal (right) antenna models
      with their optional DIN Rail clip / Mounting bracket
      Either LoRa® modulation (factory setting) or standard FSK modulation (user-reconfigurable to, then compliant with the Open Metering System specification http://oms-group.org/)

      Bubble-Up® operation with Listen Before Talk (“LBT”)

      Very fine granularity, perfectly suited to the business of Energy consumption optimisation

      Class A, with a -140 dBm receiving sensitivity and a max. EIRP of:

      12.15 dBm in ‘EU433’ and China @779 ~ 787 MHz

      14 dBm 1 in South Korea and Indonesia

      16 dBm in ‘EU868’, Russia, ‘AS923’

      19.15 dBm in China @470 ~ 510 MHz

      22 dBm in ‘US915’, ‘AU915’ and India

      Three AWG24 stripped wires – cf. 1st picture below – with:

      219 µA current                      0.2 mW max. power

      670 µF capacitance                330 mH inductance

      25 ms max. pulse duration    15 Hz max. frequency

      cf. 2nd picture below
       via a stainless-steel, 10 mm-wide, waterproof probe – cf. 3rd picture below

      -50 °C ~ +150 °C range; ±0.3 °C accuracy from +10 °C to +90 °C, ±0.6 °C from -20 °C to +110 °C, ±1.2 °C otherwise

      Please consult us for higher accuracies (yet narrower ranges)

       via a stainless-steel, 10 mm-wide probe – cf. 4th picture below

      Humidity: 0 % RH ~ 100 % RH range; ±2 % RH accuracy

      Temperature: -40 °C ~ +125 °C range; ±0.5 °C accuracy from +5 °C to +50 °C

      Please consult us for any other I2C sensor

       Two AWG24 stripped wires to connect to any current loop (aka 4 mA ~ 20 mA) sensor

      Please consult us for any 0 V ~ 10 V or 0 V ~ 5 V sensor (RTD?)

      *FACTORY OPTIONS* (subject to MOQ and other considerations)
      Doubled to 256 KB
      High radiation efficiency, straight dipole terminal antennas

      ACC-A48H for S41#xxx#U, S47#xxx#01, #09, #10 models

      ACC-A49H for S47#xxx#02, #05, #07, #08 models

      For either ACC-A48H or ACC-A49H, when and if an S40 unit is mounted horizontally
      2½ U width; doubling as a 2-hole mounting bracket

    Order Information & Part Numbers for LoRa Node

    S47017S S47-SPC-07 S40 Sensor

    LORA WAN pulse sensor 923 Mhz (AS923) IP68 rated case

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