Digital 6-in-1 CO2 Detector PTH-9A

$89.99 USD

Code  SUMMER15 15% Off Sitewide🔥🔥🔥

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Shipping Info

Ships in 3 business days

Free shipping on all orders

Return & Warranty

Hassle-free returns service

30 days easy returns

1-year warranty

Shipping Fee

We offer free shipping on all orders.


Shipping Area

The products can be delivered to the most of states in the United States except Alaska, Hawaii, American Samoa, Micronesia, Guam, Marshall Islands, Northern Mariana Islands, Palau, Puerto Rico and U.S. Virgin Islands.

We also offer international shipping. For some countries and regions, we may charge a remote fee, which depends on the carrier's standards.


Shipping Origin

For US orders, we ship from our US warehouse or our factory in China, depending on stock availability. Please refer to the information provided on the product page for details.

For international orders, we will ship directly from our factory in China. All costs collected during the transportation are the sole responsibility of the customer.


Shipping Carrier

We will select the carrier based on your shipping address.


Delivery Estimate

The order will be processed and shipped within 1-3 working days. You will receive a confirmation email after the order is shipped.

For US orders, if shipped from a US warehouse, the shipping time will be 3-5 working days. For all other orders shipped from China, shipping time is 7-12 working days.


Kindly Remind

*If you need to make any changes to your order, please contact us before shipping.
*The recipient's assistance may be required during shipping for some orders. We will contact you as soon as possible after receiving the notification from the carrier, please pay attention to check our emails.
*After receiving the ready-to-delivery email, please keep your phone open. If delivery fails, you may need to contact your local post office for pickup. Of course, we will also email you the details after receiving the notification from the carrier.

*The return policy on this page applies to all items on If you have any questions, please contact


Order Cancellation

If you need to cancel your order, please contact

Order not shipped
There are no fees and you will receive a full refund.

The order has been shipped (subject to our system status, not the order status)
You need to bear the shipping cost. If the order cannot be intercepted, you need to send the package back in its original condition after receiving it. We will process the refund for you after receiving the package.


30-Day Hassle-Free Return Policy

  • You are eligible to return the item within 30 days of receipt.
  • All returned items must be disassembled and repackaged as they were originally received.
  • No restocking fee will be charged, but the customer is responsible for return shipping costs. If there are quality issues with the product, Inkbird will bear the return shipping costs.
  • We will issue the refund after receiving the package. Refunds will be credited back to the original account, and the processing time depends on the bank or service provider.

How to Return a Product

Step 1: Contact us via email with your return request.
Step 2: After receiving return authorization, please ship the package and contact us with the package tracking number.
Step 3: After receiving and inspecting the package, we will issue a refund within 3 working days.

Please note that return the product in the original packaging we provided and the product must be damage-free, as damage will void the refund.


Contact Info

Return Address: Floor 4nd East, Building 713, Pengji Industrial Zone, Shen Zhen, 518000 Guangdong, China

Product Details

INKBIRDPLUS 6-in-1 Indoor Air Quality Monitor
6-in-1 Air Quality Monitor】INKBIRDPLUS 6-in-1 Indoor Monitor has built-in professional detection sensors, it can accurately detect the current CO2 concentration, PM2.5, PM10, AQI, temperature, and humidity in the air.
【Three AQI Stages & Sound Alarm】This Air Quality detector is designed with 3 stages of AQI - normal mode (0-50), warning mode (51-100), and danger mode (101-500). When the AQI index exceeds 100, the detector will sound an alarm.
【Calibration Function】After the device is turned off, take it to a ventilated place, and press and hold the three keys at the same time, the product will enter the automatic calibration state of carbon dioxide concentration value for 200 seconds.
【Color LED Screen】The color display with backlight makes each value clear at a glance, and you can also check the time/date/year on the detector. This air quality meter also supports setting the current time, C°/F° switching.
【Wide Application】This portable detector can detect air quality in bedrooms, living rooms, kitchens, cellars, cars, grow tents and more. With a hook design, it can be placed on the desktop or hung on the wall for easy viewing, is an ideal indoor air quality detector for our lives.
INKBIRDPLUS 6-in-1 Indoor Air Quality Monitor

This Air Quality detector is designed with 3 stages of AQI - normal mode (0-50), warning mode (51-100), and danger mode (101-500).

When the AQI exceeds 100 and the buzzer is on, the buzzer will sound an alarm.

At this time, you need to long press the "+" button to stop the alarm.

NOTE: The alarm value cannot be set.

INKBIRDPLUS 6-in-1 Indoor Air Quality Monitor


INKBIRDPLUS 6-in-1 Indoor Air Quality Monitor

Customer Reviews

Based on 2 reviews
Very good product

Great product: well made, looks good, well designed interface

Richard Perlstein
Great little device

I’ve been using the monitor to determine if my cooktop's front gas burners spew more CO2 into the kitchen than the rear burners (oh yes they do). More significantly, I used the monitor in our 11 person office to determine that, even with the HVAC system running continuously, ostensibly with 30% fresh air mixed in, the CO2 level more then doubled during the workday from the low 400s up to the 900s and higher. Workmates were suitably horrified!