- The latest PurpleAir sensor with built in full color LED ring, and a tap sensor to adjust the brightness by tapping the sensor. This one can be used indoors and out with the included desktop or wall (or pole) mount.
- Tap sensor for adjusting LED brightness, double tap the sensor to adjust LED brightness.
- User replaceable dual Laser Particle Counters (PMS-6003)
- Pressure, Temperature, Humidity & Gas Sensor (BME688)
- Built-in SD card logging and real-time clock for offline data capture
- WiFi connectivity with data stored in the cloud
| Dimensions | 3.5 in x 3.5 in x 4 in (85 mm x 85 mm x 100 mm) |
| Color | Semi transparent |
| Power requirements | 5V USB Micro, 0.18A continuous, 600mA peak |
| Intended Use | Outdoor and indoor use |
| WiFi | Yes |
| Expansion Port | Yes |
| Internal Storage | Yes, optional microSD |
| Warranty | One (1) year limited warranty |
| Tap sensor for adjusting LED brightness, double tap the sensor to adjust LED brightness. | |
| Manufacturer | Kionix, Inc. |
| Model Number | KX122-1037 |
| Temperature range | -40°F to 185°F (-40°C to 85°C) |
| Mechanical Shock (powered and unpowered) | 5,000g for 0.5ms 10,000g for 0.2ms |
| 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-6003 (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, & Gas Sensor | |
| Manufacturer | BOSCH |
| Model Number | BME688 |
| Temperature range | -40°F to 185°F (-40°C to 85°C) |
| Pressure range | 300 to 1100 hPa |
| Humidity | Response time (τ63%): 8s Accuracy tolerance: ±3% RH Hysteresis: ≤1.5% RH |
| Gas | Response time (τ33-63%): <1s Resolution: ±0.08% |
| 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:
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:
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. | |
I like my PurpleAir Zen sensor. But it feels like old tech. Why are we still using Micro-USB in 2025? The temperature sensor is higher due to the case design and lack of case ventilation. And the third-party integration with Weather Underground is abysmal. I wish they’d integrated SSL into the web browser so I don’t have a fully unsecure IoT device on my network. But overall, it does what it says, and I’m sure I’m not the only person complaining about these issues. With these issues resolved, this product would rate a hard-five-star. I like the dual redundant sensors, dual mounting system, the adjustable LEDs and the accuracy of the sensors. It’s cool to be on the map. However, they also need to look into their API: people who submit data regularly should get points/credits for being contributors. Make everyone else pay the $10 for points.
The kit arrived promptly without any hidden fees. Our Zen’s set up was easy and registration (with us adding data to global AQI services) was straightforward. I did buy an unnecessary indoor power adapter. And at this price, I should have got a micro-storage card. How can I access %RH, barometric P, and air temperature? Otherwise, these are minor problems with the kit.
The Zen unit works as advertised. I'm not fond of the configuration process. I don't like having to do it through a central web site. I'm not yet sure, but I think it uses more power than advertised, even with the brightness set on the lowest value. Also not a fan of it needing a FAT32 formatted card.
I set my purple air up weeks ago and the monitor itself works great, but I have messed around with this stupid program for weeks and still cannot get it to load my home when I open up the map without going to the email that I was sent and clicking the link.
Hi Charles,
If you're still having trouble, please send an email to contact@purpleair.com. We'd love to help you resolve your issue.
Very helpful with my copd