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Configuring Wireless Temperature and Humidity Sensor

The wireless temperature and humidity sensor measures real-time ambient temperature, relative humidity, dew point and atmospheric pressure from a water-resistant IP67 certified enclosure. Alerts can be sent when pre-defined values are breached. The alerts are sent via the alert profiles.

wireless temperature and humidity sensor

1. Setup

  1. From main menu, access Sensors > Sensors Configuration.
  2. Add sensor
    1. Select “Wireless Temperature and Humidity Sensor” from the dropdown list.
    2. Click “Add Sensor”.
    3. Each wireless sensor has a unique MAC address.
    4. Key in MAC address and sensor name and click “Insert”.
      Add wireless sensor
  3. View sensor
    After adding the Wireless Temperature and Humidity Sensor, three sensors monitoring each environmental condition – temperature, humidity and dew point appear in the table of sensors.

  4. Edit sensor
    Click the “edit” icon beside the sensor name to edit.

2. Edit sensor details

  1. Configure sensor details.
  2. Click Update to save the information.
  3. Restart the VMR service for any changes done.
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Sensor details:

  • Sensor Name: Name of the sensor.
  • Active: Varius Message Router monitors active sensors only.
  • Measures: The environmental condition to monitor.
  • Calibrate: Enable this option and key in the value to add or subtract from the sensor reading.
  • Trip conditions
    A sensor is tripped if reading exceeds a lower and upper limit for a period of time. A sensor has recovered when its reading is within a lower and upper limit for a period of time.
    • Sensor is tripped when the conditions occur longer than: The duration in minutes that causes the sensor to trip.
    • Lower than: Enable this option if you want to send alert when sensor reading falls below this lower limit.
    • Higher than: Enable this option if you want to send alert when sensor reading exceeds this upper limit.
    • Sensor has recovered when the conditions do not occur longer than: The recovery duration in minutes.
  • Example:
    • Temperature sensor settings:
      • Sensor is tripped when the conditions occur longer than: 5 minutes
      • Lower than: 20°C
      • Higher than: 30°C
      • Sensor has recovered when the conditions do not occur longer than: 5 minutes
    • Outcome:
      • Sensor trips when:
        Temperature falls below 20°C for 5 minutes or temperature rises above 30°C for 5 minutes.
      • Sensor recovers when:
        Temperature goes between 20°C and 30°C for 5 minutes.
  • Alert conditions
    Specify when to send alert.
    • Send alert when sensor is tripped: Enable this option to send alert when sensor is tripped.
    • Repeat alert every X mins if sensor remains tripped: Enable this option and specify the alert interval to send alerts at a regular interval.
    • Send alert when sensor has recovered: Enable this option to end alert when sensor has recovered.
    • Send alert when sensor is disconnected: Enable this option to detect sensor disconnection.
  • Alert mechanisms
    • Send email alerts using the alert profiles: This section shows the list of email alert profiles available. Check the profile checkbox to send alerts using the profile.
      For more information, please refer to Email Alert Profiles.
    • Send SNMP Traps using the alert profiles: This section shows the list of SNMP Trap alert profiles available. Check the profile checkbox to send alerts using the profile.

3. View sensor logs

  1. From main menu, access Sensors > Sensors Control Panel to view the current values of the temperature, humidity and dew point sensor.
  2. Click the View Logs icon beside a sensor to access the Sensor Logs page.
  3. From the Sensor Logs page, select the option from the “Report Type” dropdown list.
    • Normal: Shows the readings of the sensor at each time interval.
    • Daily summary: Provides the minimum, maximum and average measurements for better insights.
  4. Delete logs
    Select the rows to delete and click Delete.
  5. Delete all logs
    Click “Delete All” to delete all logs.
  6. Export
    Click “Export Current” to export the logs in CSV format.
Wireless temperature and humidity sensor real-time logs
Wireless temperature and humidity sensor real-time logs
Wireless temperature and humidity sensor daily summary
Wireless temperature and humidity sensor daily summary

How to improve the range of wireless sensor

Bluetooth range depends heavily on the obstructions between Varius Message Router and the Wireless temperature and humidity sensor. Different materials obstruct Bluetooth signals differently.

  • Minimize interference: Keep both Varius Message Router and the Wireless temperature and humidity sensor away from other electronic devices, metal objects, and Wi-Fi routers, as they can cause interference and reduce signal strength.
  • Line of sight: Maintain a clear line of sight between Varius Message Router and the Wireless temperature and humidity sensor, as obstacles like walls and furniture can significantly reduce the signal strength and range.
  • Adjust the orientation of your sensors: the sensor signal is slightly stronger upwards from the top cover. Head the top with the breathing membrane hole to point to Varius Message Router.
  • Optimize the location: Try to change the location of your sensors at the measurement site and place them higher location. “Ground effect” will reduce the signal strength of wireless devices.

Worst materials that obstruct Bluetooth signals: Concrete, metal objects, water, and mirrors.

Concrete is a dense material that can significantly weaken Bluetooth signals. Metal is a problematic material for Bluetooth because even a thin layer of metal blocks radio waves, i.e. Bluetooth signals completely. A Faraday cage is a space surrounded by metal. In the cage, Bluetooth signals do not travel well. Bluetooth or Wi-Fi signals do not travel well in water.