WATTECO - LoRaWan indoor temperature sensor

The sensor measures the ambient temperature in buildings, flats, houses, etc. The sensor is equipped with a detection system that detects the removal of its wall base, and an alert is sent immediately to remove any doubt about the temperature measurement. The data is transmitted via a public or private LoRaWAN® radio frequency network.

The sensor measures the indoor ambient temperature. Data transmission over the public or private LoRaWAN® network is done periodically or immediately in case of an alert:

- Minimum or maximum temperature threshold exceeded.
- Sensor unclipped from its wall mounting.

Installation and commissioning are quick and easy. The sensor is equipped with:
- a switch (ILS) for activation and deactivation,
- LEDs to monitor the configuration and pairing to the network.

Each sensor is identified by a QR code on the label and an NFC tag inside the housing.

Measurement data is transmitted individually or aggregated and compressed (batch mode) before being transmitted over the LoRaWAN® network.

Batch mode significantly reduces the amount of data transmitted while preserving the sensor's autonomy. Powered by a 3.6V/2600mAh battery, the autonomy of the sensor with 85% of the battery capacity used and configured for 1 measurement every 10 minutes and 1 transmission per hour is more than 8 years in SF12 and 10 years in SF9. The battery voltage level can be regularly monitored remotely.

FEATURES:

• LoRaWAN indoor temperature sensor
• Easy to install and use
• 10 years of autonomy
• Pull-out detection
• Supervision of heating, ventilation and air conditioning installations
• Energy optimisation of buildings (residential, tertiary)
• Temperature range: +0°C to +55°C
• Accuracy: +/-0.2°C
• Resolution: 0.1°C

TECHNICAL SPECIFICATIONS :

• RADIO FREQUENCY
  • Frequency (MHz) EU: 863-870
  • Transmitted power (dBm): +14
  • Sensitivity (dBm): -140
• FIRMWARE
  • Protocol: LoRaWAN®, Class A
  • Measurement periodicity: 10 minutes to 24 hours (configurable)
  • Transmission interval: Immediate following measurement or batch at 30min to 48hrs (configurable)
  • Data compression: By differential coding (configurable) 
  • Activation method: Activation by Personalization (ABP) or Over-The-Air Activation (OTAA)
  • Data encryption: AES128 
• ALARMS
  • Temperature: Minimum or maximum thresholds configurable from 0°C to 50°C in steps of 0.1°C
  • Alert: On sensor removal (unclipping the sensor from its wall mount)
• TEMPERATURE MEASUREMENT
  • Range: 0°C to +55°C
  • Accuracy: 0.2°C between +12°C and +25°C; otherwise ± 0.5°C
  • Resolution (in nominal range): 0.1°C
• POWER SUPPLY
  • Voltage:
    • 3.6V / 2600mAh lithium battery (can be replaced after removing the cover)
    • Transmitted battery voltage level (configurable in 0.1V steps)
  • Battery life (in the range of +10°C to +25°C):
    • Up to 10 years: 1 measurement every 10 minutes - 1 transmission per hour (SF9)
    • Up to 8 years: 1 measurement every 10 minutes - 1 transmission per hour (SF12)
• USER INTERFACE
  • ILS + LED switch: Network pairing; signaling of sensor states, visible through the openings
• BOX
  • Size / Weight – IP rating: 80 x 80 x 25mm / 95g - IP30
  • Fastenings: 2 screws and 2 dowels (supplied)
• ENVIRONMENT
  • Operation 0°C / +55°C; +0%rH / +95%rH (non-condensing)
  • Storage 10°C / +30°C; +0%rH / +60%rH