The GE SM-PWM-01A dust sensor manual provides overview, detection principle, electrical specs, installation steps and reliability data.
The SM-PWM-01A is a smart dust sensor designed for home‑appliance air‑quality applications. It detects dust particles by intersecting an IR LED beam with an image sensor; reflected light intensity is converted to PWM pulse‑width signals that indicate particle size and concentration.
The manual covers electrical characteristics, connector pin definitions, optical sensing zone, installation recommendations, cleaning procedures, sensitivity adjustment, reliability testing, LED lifetime, packaging dimensions and ordering information.
| Power supply voltage (absolute max) | -0.3 V to +7 V |
|---|---|
| Power supply voltage (typical) | 5 V ± 5 % (ripple <30 mV) |
| Supply current | < 110 mA ± 10 % |
| Operating temperature range | -10 °C to 65 °C |
| Storage temperature range | -30 °C to 80 °C |
| LED lifetime (continuous operation) | 7 years |
| Sensor dimensions (housing) | W 59 mm × H 45 mm × D 20 mm, ≈35 g |
| Packaging box size | 400 mm × 400 mm × 400 mm, max 12 kg |
The sensor should be installed vertically and kept within ±5° of vertical to ensure proper airflow through the optical zone.
The LED is rated for continuous operation for 7 years.