Thermokon LA+ CO2 / Temp / rH BAT LRW
LoRaWAN® Outdoor Air Quality Sensor
Datasheet
Technical changes reserved. Status: 07.08.2025 A143
[Image of the Thermokon LoRaWAN Outdoor Air Quality Sensor]
Application
Air quality sensor for measuring CO2 content, temperature, and humidity in outdoor areas with LoRaWAN® interface.
Type Overview
Outdoor Sensor - LRW
- LA+ CO2 Temp_rH BAT LRW
Safety Information - Attention
⚠️ The installation and assembly of electrical devices (modules) must only be carried out by an authorized specialist.
The device is intended for use only as specified. Unauthorized modification or alteration is prohibited! The modules must not be used in conjunction with devices that directly or indirectly serve human, health, or life-saving purposes, or whose operation could pose dangers to humans, animals, or property. Connection of devices with a power connection must only be carried out when the connection cable is de-energized!
Furthermore, the following apply:
- Laws, standards, and regulations
- The state of the art at the time of installation
- The technical data and the operating manual of the device
Product Testing and Certification
CE
Declaration of Conformity
Declarations of conformity for the products can be found on our website: https://www.thermokon.de/direct/categories/laplus
Disposal Information
The symbol of the crossed-out garbage can indicates that the product or removable batteries must not be disposed of with household or commercial waste. Within the EU, you are legally obliged to dispose of the product separately and appropriately according to the national laws of your country. Alternatively, contact your supplier or Thermokon Sensortechnik GmbH. Further information can be found at: www.thermokon.de
User Notes for Humidity Sensor
Under normal environmental conditions, we recommend a recalibration interval of 1 year to check the accuracy required in the application. The following environmental conditions can damage the sensor element and lead to a loss of specified accuracy in the long term:
- Mechanical stress
- Contamination (dust / fingerprints etc.)
- Aggressive chemicals
- Environmental influences (e.g., condensation on the measuring element)
? Touching the sensor elements is to be avoided!
Recalibration or possible sensor replacement does not fall under the general warranty.
Information on Room Air Quality CO2
DIN EN 13779 defines different classes for room air quality:
| Category | CO2 Content Above Outdoor Air Content in ppm | Description |
|---|---|---|
| Usual Range | Standard Value | |
| IDA1 | <400 ppm | 350 ppm - High air quality |
| IDA2 | 400.. 600 ppm | 500 ppm - Medium room air quality |
| IDA3 | 600..1,000 ppm | 800 ppm - Moderate room air quality |
| IDA4 | >1,000 ppm | 1,200 ppm - Low room air quality |
Information on CO2 Self-Calibration
All gas sensors are subject to drift. The degree of drift depends on the components used and the construction. Furthermore, the following environmental conditions, among others, can accelerate/promote the aging and wear of the sensors:
- Mechanical stress (also due to temperature fluctuations)
- Contamination (dust / fingerprints etc.)
- Aggressive chemicals
- Environmental influences (high humidity / condensation on the measuring element)
Internal self-calibration with two-channel technology compensates for the drift caused. Thermokon sensors are suitable for continuous use (e.g., hospitals).
USE-Housing with UV and Weather Protection
Plastic housings for outdoor use can lose their color and quality over time. Therefore, all USE housings are made of special white polycarbonate (PC). The most light-stable dyes and additives are used to ensure optimal protection of the polymer while maintaining color stability. The titanium dioxide used has been specially developed for polycarbonate and offers excellent UV protection by reflecting the entire light spectrum, including the UV portion at 340 nm. This effectively counteracts the otherwise occurring photochemical polymer degradation. The colors remain vibrant for a long time without fading.
Technical Data (Type-Dependent)
| Measured Variables | CO2, Temperature + Humidity |
| Supply Voltage | 1-2x AA Battery (1.5-3.6V) |
| Temperature Measuring Range | -20..+70 °C |
| Humidity Measuring Range | 0..100% rH without condensation |
| CO2 Measuring Range | 0..5000 ppm |
| Temperature Accuracy | ±0.4 K (typ. at 21 °C) |
| Humidity Accuracy | ±5% between 30..70% rH (typ. at 21 °C) |
| CO2 Accuracy | ±50 ppm +3% of measured value (typ. at 21 °C, 50% rH, 1015 hPa) |
| CO2 Calibration | Self-calibration, Dual Channel |
| Sensor | CO2 NDIR (non-dispersive, infrared) |
| Housing | USE-M-Housing / Cover, PC, pure white |
| Protection Class | IP65 according to DIN EN 60529 |
| Ambient Condition | 0..+50 °C, max. 85% rH non-condensing |
| Configuration | Thermokon LRWapp, uConfig Software, LoRaWAN® Downlink |
| Battery Lifespan | +/- 5 years (depending on device configuration, network setup, battery type* and ambient conditions) |
| * 3.6V Lithium battery (compared to 1.5V Alkaline) recommended to increase battery life |
LoRaWAN®
| Radio Technology | LoRaWAN® |
| LoRaWAN Version | 1.0.4 |
| Device Class | Class A |
| Frequency Range | EU868 (863-870 MHz) |
| Max. Transmit Power | +14 dBm (25 mW) |
| Reception Sensitivity | -137 dBm |
| Antenna | Internal transmit/receive antenna |
| LoRaWAN Features | Over-the-Air Activation (OTAA), Adaptive Data Rate (ADR) |
| Data Transmission | Heartbeat Interval (Default: 1440 min), Measurement Interval (Default: 1 min), Hysteresis transmission behavior |
Mounting Instructions
When mounting outdoors, avoid direct rain and sunlight. Use sun or rain protection if necessary. Cable entry from below or the side. For side cable entry, create a loop so that precipitation can drip off in a defined manner. When in use, the permissible ambient conditions must be taken into account.
[Diagram showing incorrect and correct mounting orientations and cable entry]
Battery Installation
The LA+ BAT LRW is powered by 1 or 2 AA batteries. Using 2 batteries increases battery life. Insert the batteries into the battery compartment correctly as shown. (included in delivery)
When using a single battery, please use battery compartment 1.
[Image showing battery installation with VARTA batteries and a 'Tester' label]
Notes on Commissioning
ℹ️ The necessary LoRaWAN credentials for commissioning can be read out via the uConfig software or the LRWapp. Upon request, the LoRaWAN credentials can also be provided in digital form. Please contact your respective contact person for this.
Information on LoRaWAN Interface Description
The Thermokon LoRaWAN interface description can be downloaded from our website.
Configuration
Configuration is carried out while the device is powered. The following options are available for device configuration:
- Connection to Device: Micro-USB Cable, Bluetooth Function, LoRaWAN® Downlink
- Configuration Software: PC/Notebook with uConfig Software (LRW Menu), Smartphone/Tablet with LRWapp, LoRaWAN Network Server
[Diagram showing configuration options: Micro-USB, Bluetooth, LoRaWAN Downlink, with associated software/apps]
The configuration app and its instructions can be downloaded from the Google Play Store or the Apple App Store.
Notes on Bluetooth Configuration
ℹ️ Press the button to start Bluetooth communication. After pressing the button, a connection can be established via the app within approx. 20 seconds. This is indicated by a flashing LED.
User Notes
Over time, dust and dirt particles accumulate on the filter. These impair the function of the sensor. Under normal environmental conditions, we recommend a maintenance interval of one year to maintain the specified accuracy. After successful disassembly, the filter can be cleaned by blowing it out with oil-free compressed air, nitrogen, or with distilled water. Severely soiled filters should be replaced.
Dimensions (mm)
[Diagram showing dimensions of the sensor housing]
Accessories (Included in Delivery)
- Battery (Alkaline-Manganese 1.5V AA) - Art. No.: 459099
- Rain protection sleeve - Art. No.: 670715
- Mounting base - Art. No.: 631228
- Mounting set universal - Art. No.: 698511 (Includes: Cover screw + screw cover, 2 dowels, 2 countersunk head screws, 2 lens head screws)
Accessories (Optional, Type-Dependent)
- Filter stainless steel mesh 80µm - Art. No.: 231169
- Battery ER14505 (Lithium Thionyl Chloride 3.6V AA) - Art. No.: 759182
