LEFOO LFG303 PM2.5 and PM10 Indoor Dust Transmitter and Controller
LEFOO LFG303 PM2.5 and PM10 Indoor Dust Transmitter and Controller. Information is drawn from original Chinese-language manufacturer product material; order-code-specific performance must be checked.
Manufacturer specifications
| Principle | Laser light-scattering particle counter/transmitter for indoor PM2.5/PM10 |
|---|---|
| PM2.5 | 0–500 µg/m³ and stated ±10 µg/m³ within 0–100 µg/m³ at 25°C, ±10% FS at 100–500 µg/m³ |
| PM10 | 0–600 µg/m³, manufacturer-listed particle size 0.3–10 µm |
| Output | Manufacturer series catalog lists 4–20 mA & 0–10 V or RS485 options; confirm exact wiring |
| Ambient | 0 to +50°C and 0–95% RH non-condensing; IP30 |
Original LEFOO manufacturer source · Original LEFOO model technical article
LFG303 — dust mass versus particle count
LFG303 monitors PM2.5 and PM10 by optical light scattering; concentration readings in µg/m³ should not be treated as direct particle counts or reference-grade gravimetric sampling. The source lists different error bands below and above 100 µg/m³ for PM2.5, which matters for indoor filtering control thresholds. Confirm airflow around the optical inlet, filter contamination, cleaning access and whether the ordered model provides analog or RS485 channels. The reported IP30 enclosure is intended for indoor use and has limited ingress protection.