Grove Dust Sensor Air Quality

Specifications:

1. • Input voltage: DC 5V
   • Power: 150mA
   • DO output: TTL digital 0 and 1 (0.1 and 5V)
   • AO output: 0.1-0.3V (relatively clean), the highest concentration voltage is about 4V.
   • Suitable for home or factory gas leakage monitoring devices.
   • Have better sensitivity to Carbon Monoxide, Methane and LPG Gas.
   • High quality dual-panel design, with power indicator and TTL signal output instructions.
   • DO switching signal (TTL) output and AO analog signal output.
   • TTL output valid signal is low. (When the output low signal is on, it can be directly connected micro-controller or relay module.)
   • Analog output voltage: the higher concentration, the higher voltage.

Features :

1. circuit voltage: 5V±0.1
2. Heating voltage (high): 5V±0.1
3. Heating voltage (low): 1.4V±0.1
4. Load resistance: Adjustable
5. Heating resistance: 33Ω±5%
6. Heating time (high): 60±1 seconds
7. Heating time (low): 90±1 seconds
8. Heating consumption: About 350mW
9. Using temperature: -20°C-50°C
10. Storage temperature: -20°C-50°C
11. Relative humidity: Less than 95%RH
12. Oxygen concentration: 21%(stand condition) the oxygen concentration can affect the sensitivity characteristic

Specifications :

• Operating voltage:5v
• Load resistance: 20KΩ
• Heater resistance: 33Ω ± 5%
• Heating consumption:<800mw
• Sensing Resistance: 10 KΩ – 60 KΩ
• Concentration Scope:200 – 10000ppm
• Preheat Time: over 24 hour

Specifications:

1. Wide detecting scope
2. Fast response and High sensitivity
3. Stable and long life
4. Operating Voltage is +5V
5. Detect/Measure NH3, NOx, alcohol, Benzene, smoke, CO2, etc.
6. Analog output voltage: 0V to 5V
7. Digital output voltage: 0V or 5V (TTL Logic)
8. Preheat duration 20 seconds
9. Can be used as a Digital or analog sensor
10. The Sensitivity of Digital pin can be varied using the potentiometer