Honeywell HPMA-115SO

Measurement Principle: Laser scattering (optical particle counting)

Measured Particulate Matter: PM2.5 (Particulate matter ≤ 2.5 µm)

Concentration Range: 0 – 1,000 µg/m³

Accuracy / Resolution: ±15 µg/m³ or ±15% of reading (whichever is greater)

Response Time: ≤ 6 seconds

Output Interface: UART (universal asynchronous receiver-transmitter) digital output

Data Update Rate: 1 second (typical)

Supply Voltage: 5.0 VDC ± 0.2 V

Current Consumption:

• Operating: ≤ 80 mA

• Peak: ≤ 100 mA

Operating Temperature: -20°C to +50°C

Storage Temperature: -40°C to +70°C

Operating Humidity: 0% – 95% RH (non-condensing)

Lifetime (MTTF): ≥ 20,000 hours (continuous operation)

Dimensions: 48 mm × 38 mm × 12 mm

Weight: ~20 g

Communication Protocol: UART (3.3V logic level, 9600 bps default)