Omschrijving
IAQ (Indoor Air Quality) is a very important factor for indoor activity and human life. VOC (Volatile Organic Compound) are emitted as gases from certain solids or liquids and they are the main source for poor indoor air quality. LAQ4 provides the trend for IAQ measurement and, like all other TVOC sensors, LAQ4 requires calibration for more accurate measurement on TVOC and eCO2.
The LAQ4 supports temperature and humidity alarm features, users can get alarms for instant notice. it also supports the Datalog feature, the user can retrieve the sensor data from LoRaWAN commands.
Each LAQ4 is pre-load with a set of unique keys for LoRaWAN registration, register these keys to the local LoRaWAN server and it will auto-connect after activation.
Features
- LoRaWAN v1.0.3 Class A
- Ultra-low power consumption
- Monitor TVOC/ eCO2/ Temperature and Relative Humidity
- Temperature & Humidity alarm
- AT Commands to change parameters
- Auto adjust timing. Remote retrieve data
- Uplink on periodically or Interrupt
- Downlink to change configure
- Battery Life: 7 ~ 10 months.
Applications
- Home and Building Automation
- Industrial Monitoring and Control
Common DC Characteristics
- Supply Voltage: built in 4000mAh Li-SOCI2 battery
- Operating Temperature: -40 ~ 85°C
TVOC Sensor
- 0ppb to 29206 ppb. Values outside this range are clipped
- Temperature and Humidity Compensation
eCO2 Sensor
- 400ppm to 32768 ppm. Values outside this range are clipped
Note: eCO2 (equivalent calculated carbon dioxide) is different things vs the real CO2. It is calculated by the TVOC value. - Temperature and Humidity Compensation
Temperature Sensor
- Range: -40 to + 80°C
- Accuracy: Typ ±0.3 @ 0-90 °C
- Resolution: 0.01°C
- Long Term Shift: Typ <0.02 °C/yr
Relative Humidity Sensor
- Range: 0 ~ 99.9% RH
- Accuracy: ± 3%RH ( 0 ~ 100%RH)
- Resolution: 0.04% RH
- Long Term Shift: <0.25 %RH/yr
Power Consumption
- Deep Sleep Mode / IDLE Mode: 9uA
- Sampling Mode: 11.8mA @ 2s for every 60 seconds
- LoRaWAN Transmit Mode: 125mA
