PurpleAir Classic Air Quality Monitor

Regular price: $229.00
Sale price: $229.00

The PurpleAir Classic air quality monitor is the original and popular PurpleAir sensor. It measures real-time PM2.5 concentrations for residential, commercial, or industrial use and can be installed indoors or outdoors. Built-in WiFi enables the air quality measurement device to transmit data to the real-time PurpleAir Map, which is stored and made available to any smart device.

The PA-II is available in two editions. The SD edition includes an onboard SD logger to record and store data without a WiFi connection.

Please note: This sensor does not come with a power adaptor. Find a suitable OUTDOOR-rated adaptor here or use your own USB power source (any 5V, 1.2 to 2.4 amp adaptor will work).

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Overview
Specs

Classic PurpleAir PA-II particulate sensor
Dual Laser Particle Counters (PMS-5003)
Pressure, Temperature & Humidity Sensor (BME280)
WiFi connectivity with data stored in the cloud

Classic PurpleAir dual laser particulate sensor
Dimensions	3.5 in x 3.5 in x 5 in (85 mm x 85 mm x 125 mm)
Color	White
Power requirements	5V USB Micro, 0.18A continuous, 600mA peak
Intended Use	Outdoor and indoor use
WiFi	Yes
Expansion Port	No
Internal Storage	No
Warranty	One (1) year limited warranty

Laser Particle Counters Class 1 Laser. A Class 1 laser is safe under all conditions of normal use.
Manufacturer	Plantower
This device contains two particle detectors to provide redundancy and help determine sensor health.
Type	PMS-5003 (2)
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 liter
Single response time	≤1 second
Total response time	≤10 seconds

Pressure, Temperature, & Humidity Sensor
Manufacturer	BOSCH
Model Number	BME280
Temperature range	-40°F to 185°F (-40°C to 85°C)
Pressure range	300 to 1100 hPa
Humidity	Response time (τ63%): 1s Accuracy tolerance: ±3% RH Hysteresis: ≤2% RH

Wireless Contains Transmitter Module FCC ID: 2AC7Z-ESPWROOM02D
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
FCC Compliance Statement (Part 15.19) This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: This device may not cause harmful interference, and This device must accept any interference received, including interference that may cause undesired operation. Warning (Part 15.21) Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. FCC Interference Statement (Part 15.105 (b)) This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. To comply with FCC/IC RF exposure limits for general population / uncontrolled exposure, the antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter.

Overview
Specs

Classic PurpleAir PA-II-SD particulate sensor with microSD logger
Dual Laser Particle Counters (PMS-5003)
Pressure, Temperature & Humidity Sensor (BME280)
Built-in SD card logging and real-time clock for offline data capture
WiFi connectivity with data stored in the cloud

Classic PurpleAir dual laser particulate sensor with on-board SD card logger
Dimensions	3.5 in x 3.5 in x 5 in (85 mm x 85 mm x 125 mm)
Color	White
Power requirements	5V USB Micro, 0.18A continuous, 600mA peak
Intended Use	Outdoor and indoor use
WiFi	Yes
Expansion Port	No
Internal Storage	Yes, 32GB microSD
Warranty	One (1) year limited warranty

Laser Particle Counters Class 1 Laser. A Class 1 laser is safe under all conditions of normal use.
Manufacturer	Plantower
This device contains two particle detectors to provide redundancy and help determine sensor health.
Type	PMS-5003 (2)
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 liter
Single response time	≤1 second
Total response time	≤10 seconds

Pressure, Temperature, & Humidity Sensor
Manufacturer	BOSCH
Model Number	BME280
Temperature range	-40°F to 185°F (-40°C to 85°C)
Pressure range	300 to 1100 hPa
Humidity	Response time (τ63%): 1s Accuracy tolerance: ±3% RH Hysteresis: ≤2% RH

Built-in SD Card Logger & Real-time Clock
Real-time Clock (RTC)	DS3231 Extremely accurate I2C real-time clock
Real-time Clock Battery	CR2032 3V
SD Card	MicroSD card Takes microSD cards up to 64GB
SD Card Format	FAT32
SD Card Data Access	Remove the microSD card by pushing it in to unlatch and then pull out with tweezers. Insert the SD card into a computer to access the csv and data files. More information on working with SD data is available here on the PurpleAir community site. We also provide a software tool to help work with this data here.

Wireless Contains Transmitter Module FCC ID: 2AC7Z-ESPWROOM02D
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
FCC Compliance Statement (Part 15.19) This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: This device may not cause harmful interference, and This device must accept any interference received, including interference that may cause undesired operation. Warning (Part 15.21) Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. FCC Interference Statement (Part 15.105 (b)) This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. To comply with FCC/IC RF exposure limits for general population / uncontrolled exposure, the antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter.

Will not necessarily run on your computer...

I purchased two monitors, I have Starlink with 2024 Dell Inspiron 16 I5... when
you go to hookup the wifi, the monitor will not connect... I have sent them to
others in the area to see if they will work...

Hi Gary,

We're sorry that you've run into trouble setting up the sensors. This is certainly not the experience we want our customers to have. If you, or the others you've given the sensors to, need help getting the devices connected to WiFi, please send an email to contact@purpleair.com.

Reassurance with a PurpleAir sensor

As a person who has had lung cancer and one lung removed - the Purpleair sensor in my patio gives me reassurance that my local air quality is good before I venture out. In particular, I worry about the future forest fires and air pollution this summer.

Excellent!

Great product! This essential air monitor is exactly what I needed to help support our wellbeing.

Amazing product, but not a friendly user interface

Have to get a separate sensor app (Paku) to view data in an easily-accesible way on the iPhone, for example.

Up and online in a few minutes

Shipped quick, easy to set up. Integrating the MAC address into the registration URL was a nice touch.

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PurpleAir Classic Air Quality Monitor

Customer Reviews