dataloggers, thermometers, hygrometers...
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IoT wireless thermometer, hygrometer, LoRaWAN network

The W3910 sensor with LoRaWAN network output measures the temperature and humidity from the built-in internal sensor and can be installed directly in the measured environment thanks to its IP65-rated enclosure. LoRa devices are powered by a replaceable battery with a lifespan of up to 10 years (3 years standard). External power with optional accessories is also available. The sensor can be used with a suitable sensor cap even in more demanding conditions.

Measured values are transmitted wirelessly at adjustable intervals (from 5 minutes to 24 hours) to the COMET Cloud storage, where they are accessible to users via computer or mobile device. The sensors offer remote configuration from the COMET Cloud and feature the capability to monitor up to two alarm thresholds, with any exceedance signaled by an alert sent to the user.

Key Features

  • Wireless transmission of measured values and alarm states
  • Battery-powered with low battery indicator (battery life up to 10 years) and external power option
  • Remote device configuration via COMET Cloud
  • IP65-rated enclosure
  • Calibration certificate with declared metrological traceability of standards according to CSN EN ISO/IEC 17025
  • Preconfigured Gateway available as an accessory at extra cost. For ease of use, we offer the pre-configured LoRaWAN Gateway SP041, which is fully ready for communication with COMET Cloud and our sensors. This option simplifies the setup process and saves time for users

 

  • code
    W3910
  • Warranty
    3 years
  • On request

Technical data

Measured value

Temperature
Relative humidity
Counted values (dew point…)

TEMPERATURE SENSOR

Measuring range -30 to +60 °C
Accuracy ±0.4 °C
Resolution 0.1 °C
Response time t90 of temperature measurement (temperature step 20°C, air flow approximately 1m/s) 10 minutes

HUMIDITY SENSOR

Measuring range 0 to 100 % RH
Accuracy ±1.8 % RH from 0 to 90 % at 23 °C
Resolution 0.1% RH

DEW POINT

Measuring range -60 to +60 °C
Accuracy ±1.5 °C at ambient temperature T <25 °C and RH >30 %
Resolution 0.1 °C

GENERAL TECHNICAL DATA

Operating temperature -30 to +60 °C
Channels internal temperature and humidity sensor
Message transmission interval adjustable 5-10-15-20-30 minutes, 1-2-3-4-6-8-12-24 hours
Operating frequency Europe 863-870 MHz
Maximum transmission power 25 mW (14 dBm)
Typical range of transmitter 15 km in the field, 2 km in the city (sensor in building)
Antenna internal, gain 2,15 dBi
Maximum receiver sensitivity -136 dBm @BW=125 kHz, SF=12
Power Lithium battery 3.6 V, AA size
Protection class IP65
Dimensions 126 x 89 x 40mm
Weight (including batteries) 150g
Warranty 3 years

Countries using the LoRaWAN EU 868 frequency plan

Europe:

  • Albania, Andorra, Austria, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Montenegro, Netherlands, North Macedonia, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey, United Kingdom (UK), VaticanCity (HolySee)

Africa:

  • Angola, Botswana, Democratic Republic of the Congo, Eswatini (formerly Swaziland), Lesotho, Madagascar, Malawi, Mauritius, Mozambique, Namibia, Seychelles, South Africa, Tanzania, Zambia, Zimbabwe

Asia:

  • Bahrain, Philippines, Saudi Arabia, United Arab Emirates (UAE)

 

 

Optional accessories and download

Lithium battery 3,6V/AA

Lithium battery 3,6V/AA

code A4203
Price $24
In stock 32 pcs
Lithium battery 3,6VC

Lithium battery 3,6VC

code A4206
Price $48
In stock on request
Adapter for external supply of IoT sensor with radio output to Sigfox network

Adapter for external supply of IoT sensor with radio output to Sigfox network

code SP014
Price $60
In stock on request

Accredited temperature and relative humidity calibration

Accredited temperature and relative humidity calibration

code SLU003
Price $112
In stock on request

LoraWAN Gateway

LoraWAN Gateway

code SP041
Price On request
In stock 7 pcs

Holder for mounting the COMET Transmitter on magnetic surfaces

Holder for mounting the COMET Transmitter on magnetic surfaces

code SP102
Price $14
In stock 16 pcs

sintered bronze sensor cover

sintered bronze sensor cover

code F0000
Price $38
In stock on request
PTFE sensor protection, white

PTFE sensor protection, white

code F5300
Price $76
In stock on request

COMET Cloud

COMET Cloud

code cloud
Price On request
In stock yes

COMETEO Professional Multi-Plate Radiation Shield for Weather Sensors

COMETEO Professional Multi-Plate Radiation Shield for Weather Sensors

code F8000
Price $450
In stock on request

Software

download-icon Comet Vision Software (2.3.8935.24346 dbapi 21.1)
16.56 MB
download-icon Conversions - application for recalculation of values
694.50 KB
download-icon COMET Cloud Lite - Android (Google Play)
download-icon COMET Cloud Lite - iOS (App Store)

Others

download-icon Terms and Conditions COMET System s.r.o.
133.12 KB

Catalogs

download-icon CATALOG - IoT Sensors powered by LoRa
2.36 MB
download-icon Catalogue Sheets - COMET LoRa Sensors
2.70 MB

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