With the PA-I-Indoor’s full-color LED, the resulting glow indicates air quality at a glance from across the room. Sporting a simple design that sits comfortably on a counter or tabletop, the PA-I-Indoor measures real-time PM2.5 concentrations. Built-in WiFi enables the sensor to transmit data to the PurpleAir map, where it is stored and made available to any smart device.
| Dimensions | 3 in x 4 in x 2.75 in (102 mm x 76 mm x 70 mm) |
| Color | Translucent white with real-time AQI colored LED light |
| Intended Use | Indoor use only |
| WiFi | Yes |
| Internal Storage | No |
| Warranty | One (1) year limited warranty |
| General | |
| Dimensions | 3 in x 4 in x 2.75 in (102 mm x 76 mm x 70 mm) |
| Sensor weight | 6.4 oz (181 g) |
| Power supply length | 3.2 ft (1 m) |
| Color | Translucent white with real-time AQI colored LED light |
| Power Supply | |
| A/C input | 100-240V AC, 50/60Hz, 1.5A |
| A/C output | 5V DC, 3A |
| Sensor input | 5V DC, 0.18A continuous, 600mA peak |
| Weather resistance | Indoor use only |
| Plug type | 2 Pins, Type A (USA) |
| Wireless | |
| Wireless Networks | 802.11b/g/n @ 2.4GHz (WPA2 pre-shared key or open networks) |
| Certificates | FCC/CE/ TELEC/SRRC |
| Tx Power | 802.11 b: +20 dBm 802.11 g: +17 dBm 802.11 n: +14 dBm |
| Rx Sensitivity | 802.11 b: -91 dbm (11 Mbps) 802.11 g: -75 dbm (54 Mbps) 802.11 n: -72 dbm (MCS7) |
| Antenna Type | 2 dBi on-board PCB antenna |
| Laser Particle Counters | |
| Type | (1) PMS1003 |
| Range of measurement | 0.3, 0.5, 1.0, 2.5, 5.0, & 10 μm |
| Counting efficiency | 50% at 0.3μm & 98% at ≥0.5μm |
| Effective range (PM2.5 standard)* |
0 to 500 μg/m³ |
| Maximum range (PM2.5 standard)* | ≥1000 μg/m³ |
| Maximum consistency error (PM2.5 standard) | ±10% at 100 to 500μg/m³ & ±10μg/m³ at 0 to 100μg/m³ |
| Standard Volume | 0.1 Litre |
| Single response time | ≤1 second |
| Total response time | ≤10 seconds |
| Pressure, Temperature, & Humidity Sensor | |
| Type | BME280 |
| Temperature range | -40°F to 185°F (-40°C to 85°C) |
| Pressure range | 300 to 1100 hPa |
| Humidity | Response time (τ63%): 1 s Accuracy tolerance: ±3% RH Hysteresis: ≤2% RH |