PurpleAir Touch Indoor Air Quality Monitor
PurpleAir Touch Indoor Air Quality Monitor
PurpleAir Touch Indoor Air Quality Monitor
PurpleAir Touch Indoor Air Quality Monitor
PurpleAir Touch Indoor Air Quality Monitor
PurpleAir Touch Indoor Air Quality Monitor

PurpleAir Touch Indoor Air Quality Monitor

Regular price
Sale price

The PurpleAir Touch indoor air quality monitor’s built-in WiFi integration will let you check your air quality through the real-time PurpleAir Map – from anywhere in the world. Double tap to adjust the brightness of the highly visible multi-colored LED ring, allowing quick air quality identification from across the room. Uncluttered and attractive, the PurpleAir indoor monitor comes with a white USB cable and provides you and your family with industry-leading performance in measuring PM2.5 pollutant levels in your home.

Please note, this sensor does not come with a power adaptor. You may use your own USB power source (any 5V, 1.2 to 2.4 amp adaptor will work) or find one here.

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  • New Generation PurpleAir indoor particulate sensor with multi-colored LED ring
  • Tap sensor for adjusting LED brightness, double tap the sensor to adjust LED brightness.
  • Single Laser Particle Counter (PMS-1003)
  • Pressure, Temperature, Humidity & Gas Sensor (BME688)
  • WiFi connectivity with data stored in the cloud
Dimensions 4.25 in x 3 in x 2.25 in (108 mm x 67 mm x 57 mm)
Color Translucent white with real-time US EPA AQI multi-colored LED ring
Power requirements 5V USB Micro, 0.18A continuous, 600mA peak
Power cord length 3.2ft (1m) USB (Type A)
Intended Use Indoor use only
WiFi Yes
Expansion Port Yes
Internal Storage No
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
Type PMS-1003
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%

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:

  1. This device may not cause harmful interference, and
  2. 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.

Customer Reviews

Based on 13 reviews
the gold (purple) standard in air quality

With the constant fires in our region, we've long trusted Purple Air to help us know if we've properly sealed off our house when disasters strikes outside. It's how we keep safe and healthy. I've had one since 2018 that still works fine, and have bought a number for friends and relatives over the years. I recommend them to anyone who asks.

Cynthia Babich
no more purple air monitors for us

Charging us for data is wrong wrong wrong.
We are really mad. We have 12 outdoor and 5 indoor monitors. We will not be purchasing any more. We were so happy that we finally found someone to analysis our data and then the charging for data downloads happened, shame on you. You know that citizens and community groups are using these monitors to bring relief to the air pollution we are seeing in our overburdened communities and then you charging is adding insult to injury. Shame.

Cynthia, please reach out to us on contact@purpleair.com and we will give you points to access the data for your devices. Why do we charge for data now? Up till now, you have been supporting the network by paying for your sensors. Lots of data was then downloaded by anyone and everyone for free. You supported that. So now, to make it more fair, we are getting the data consumers to pay their share to help support the network. Anyone with this same type of concern should reach out to us to get some points or a discount to access data. We certainly want to help you.

Edward Erskine
Love it

Yes, it is expensive. For the money, should I have bought another outdoor version and used it inside (so I would have the dual lasers) ? Probably. Are there cheaper competing products that would also give me a simple indication of indoor air quality? Certainly.

However, this is simple and attractive. The LEDs are adjustably visible, and give that wonderfully effective non-technical feedback that is easy to explain.

Installation was a breeze - exactly as described in the guide.

Knocking off a star for the price, even with the discount. But I enjoy the Purpleair ecosystem, so there is pleasure in adding this to the existing outside sensor that has worked without a single hiccup for 5 years.

Michael Neba
Purple Indoor takes place in my living-room, LOVE IT!

My Outdoor sensor from Purple Air gets a "brother" for Air Quality Indoor measurement. A new eyecatcher for my living-room.
A short look to the green light, evertything fine, and it doesn't need much energy, <1 Watt!
High quality without further action!
Only installation, that's it.
And it works, it works, it works...

Matt V
Back Burners!!

Purple air indoor sensor helped determining that using the front burners of my stove every morning for cooking breakfast was a air quality killer as the fans were not venting the smoke properly . Moving to the back burners had a significant difference. I don’t understand why the manufacturers aren’t doing anything about it.