LoRaWAN Optical Oxygen Gas Sensor
SKU#
⚠ Obsolete. Replaced by
WSLRW-LMO2
The WSLRW-LMO2 is a factory-calibrated LoRaWAN ambient oxygen sensor operating on the principle of luminescence quenching by oxygen. This optical measurement technique eliminates the electrochemical reaction found in conventional sensors, delivering a significantly extended operational lifetime compared to electrochemical or galvanic alternatives, while maintaining comparable low power consumption.
Integrated temperature compensation ensures linear and accurate output across a wide environmental operating range without requiring additional system components. The sensor is free of lead and hazardous substances, and exhibits negligible cross-sensitivity to other gases, minimizing false readings in mixed-gas environments.
An ultra-low power architecture combined with intelligent onboard firmware enables up to 10 years of operation on two standard AA-type batteries, depending on transmission interval configuration. Data is transmitted over LoRaWAN, supporting kilometer-range communication to any compliant gateway on public or private network infrastructures.
Typical applications include Indoor Air Quality (IAQ) monitoring, HVAC control, greenhouse management, and smart agriculture deployments.
Applications
Ambient Air Quality Monitor, Indoor Air Quality Monitor, Gas Analyzing, Warehouse Monitoring
LoRaWAN communication
LoRaWAN communication standard to allow sensor connect to any LoRaWAN Gateway on the market
Longer lifetime, lower cost of ownership
Non-depleting luminescence technology delivers far longer service life than electrochemical alternatives to reduce replacement frequency and long-term maintenance costs.
5-10 years battery
Ultra-low power sensing technology from Daviteq with Ultra-low power wireless technology allow the sensor can last up to 5 years with 02 x AA batteries
Reliable readings in real-world environments
Inherently selective optical technology shows zero cross-sensitivity to other common gases to eliminate wrong measurement in mixed-gas environments.
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| PERFROMANCE SPECIFICATIONS | |
| Measuring principle | Luminescence quenching by oxygen |
| Oxygen measuring range | 0 – 25% |
| Response time | T90: < 30 s (typical) |
| Accuracy | O₂%: 1.1%, ppO₂: < 2% FS, Temperature: indication only, Pressure: ± 5 mbar |
| Resolution | O₂%: 0.01%, ppO₂: 0.1 mbar, Temperature: 0.1 °C, Pressure: 1 mbar |
| ENVIRONEMNT SPECIFICATION | |
| Operating temperature | −30 to +60 °C |
| Storage temperature | −30 to +60 °C |
| Humidity | 0 – 99% RH (non-condensing) |
| Barometric pressure range | 500 – 1200 mbar |
| COMMUNICATION | |
| SF Factor | SF7∼SF12 |
| Antenna | Internal Antenna 2.0 dbi |
| Battery | 02 x AA size 1.5VDC, battery not included |
| RF Frequency and Power | 860∼930MHz, 14∼20 dBm, configurable for zones: EU868, IN865, RU864, KR920, AS923, AU915, US915 |
| Protocol | LoRaWAN, class A |
| Data sending modes | Interval time and when alarm occurred |
| RF Module complies to | ETSI EN 300 220, EN 303 204 (Europe) FCC CFR47 Part15 (US), ARIB STD-T108 (Japan) |
| Vietnam Type Approval | TBA soon |
| Working temperature | -40∼60℃ (with AA L91 Energizer®) |
| Housing/Protection | Aluminum + Polycarbonate/ IP67 |
| Dimension | H180xW73xD42 |
| Net weight | < 400g |
Dimension
Application Notes
