Technical Specifications
The temperature sensor uses high-precision chips and complex accuracy compensation algorithms, so the annual deviation is very small. In most cases, users do not need to calibrate the sensor.
Long-term deviation: typical value <0.03 °C/year, Max. value <0.04°C/year
CO2 Calibration
The CO2 sensor is calibrated using a single-point calibration method. Place the SensNode-LR-CO2-TH into a standard gas or near a standard device, and complete the calibration by entering the current CO2 concentration value in your environment into the sensor via the app.
If there is no standard gas or device, place the sensor in a ventilated outdoor area. The outdoor CO2 concentration is generally accepted as 400ppm. Wait for 5-10 minutes and enter this value as calibration into the sensor via the app.
Note: Ensure that no one is breathing near the sensor during calibration; the annual deviation of CO2 is small, and calibration is generally recommended every 1-2 years.
CO2
| Resolution | 1 ppm |
Air Temperature
| Range | -40 to +85 °C |
| Accuracy | ±0.2 °C |
| Resolution | 0.01 °C |
| Long-Term Deviation | <0.03 °C/year |
Air Humidity
| Range | 0% to 100% RH |
| Accuracy | ±1.8 %RH |
| Resolution | 0.01 %RH |
| Long-Term Deviation | <0.25 %RH/year |
General Parameters
| Product Model | SensNode-LR-CO2-TH |
| Supported Protocol | LoRaWAN v1.0.3 Class A |
| Built-in Bluetooth | App Tool to change parameters |
| LoRaWAN Channel Plan | IN865/EU868/US915/AU915/AS923/KR920/RU864 * |
| Max. Transmission Power | 19dBm |
| Sensitivity | -136dBm@SF12 BW=125KHz |
| Communication Range | 2 to 10km (depending on gateway antenna and environment) |
| IP Protection Class | IP66 |
| Operating Temperature | 0 to +50 °C (effective measurement range for CO2), -40 to +85 °C (excluding CO2 module) |
| Operating Humidity | 0% to 90% RH (non-condensing) |
| Device Weight | 285g |
| Certification | CE / FCC / RoHS |
Battery (Included in Equipment)
| Battery Life | Up to 10 years** |
| Battery Capacity | 19Ah (non-rechargeable) |
| Battery Type | Standard D size SOCl2 Battery |
Dimensions
| Measurement | Value (mm) |
|---|---|
| Top cross-section height | 6.7 |
| Width | 63.0 |
| Total height | 144.5 |
| Bottom height | 39.7 |
| Side view width | 57.0 |
| Bottom connection diameter | 33.0 |