FABISENSE PTH-9C / PTH-9CW CO₂ Monitor

Know Your Indoor CO₂ Level at a Glance

The FABISENSE PTH-9C / PTH-9CW CO₂ Monitor is designed for simple, continuous indoor carbon dioxide monitoring.

Equipped with an NDIR CO₂ sensor, it tracks CO₂ levels from 400–5000 ppm while also displaying temperature and humidity on one clear screen.

A large numerical display and visual air-quality status indicator make changing indoor conditions easy to understand.

Choose the PTH-9C for straightforward standalone monitoring, or the PTH-9CW for added 2.4GHz Wi-Fi connectivity and Tuya Smart app support.

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Real-Time NDIR CO₂ Monitoring

CO₂ levels can rise quickly in enclosed or occupied spaces.

The built-in NDIR sensor continuously measures carbon dioxide concentration to help you understand changing indoor air conditions.

CO₂ Range: 400–5000 ppm
Resolution: 1 ppm
Accuracy: ±(50 ppm ±5%)

Real-time monitoring makes it easier to recognize when fresh-air ventilation may be needed.

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Large, Easy-to-Read Display

Important information is displayed clearly on one screen.

View:

CO₂ • Temperature • Humidity • Air Quality Status • Battery Level

The large CO₂ number can be checked quickly from across a room without navigating through complicated menus.

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Visual Air Quality Indicator

Numbers alone are not always easy to interpret.

The PTH-9C series uses a visual status indicator to help you quickly recognize changing indoor CO₂ conditions.

A quick glance gives you a clearer idea of the current room environment and when ventilation may be useful.

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Temperature & Humidity Monitoring

In addition to CO₂, the monitor also measures indoor temperature and relative humidity.

Temperature Range: -10°C to 40°C
Temperature Accuracy: ±1°C

Humidity Range: 20%–80% RH
Humidity Accuracy: ±5% RH

This gives you a more complete view of indoor comfort conditions from one device.

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Built-In Audible Alert

The built-in buzzer provides an additional reminder when the monitored level reaches the preset warning condition.

Together with the large numerical display and visual indicator, the audible alert makes important changes easier to notice.

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PTH-9C vs PTH-9CW

PTH-9C

Simple Standalone Monitoring

A practical choice for users who mainly want to check CO₂, temperature and humidity directly on the device.

PTH-9CW

Wi-Fi Smart Monitoring

Includes all PTH-9C monitoring functions plus:

2.4GHz Wi-Fi
Tuya Smart App

Ideal for users who prefer connected monitoring through their smartphone.

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Smart Monitoring with PTH-9CW

The PTH-9CW connects to a 2.4GHz Wi-Fi network and works with Tuya Smart for compatible app functions.

This gives you a more convenient way to view indoor environmental information from your phone.

Wi-Fi and app functions are available on PTH-9CW only.

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Rechargeable & Easy to Place

A built-in 2000mAh rechargeable Li-Po battery gives you more flexibility when positioning the monitor.

Charging: USB Type-C
Input: 5V ⎓ 1A

Place it on a:

Desk • Nightstand • Shelf • Workstation • Greenhouse Bench

The compact design makes it easy to move between different indoor spaces.

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Designed for Everyday Indoor Spaces

Bedroom

Keep an eye on CO₂ conditions in enclosed sleeping spaces.

Home Office

Monitor changing CO₂ levels during long working sessions.

Classroom

Useful for occupied learning and study environments.

Living Room

Check everyday indoor CO₂, temperature and humidity conditions.

Greenhouse

Monitor CO₂ together with temperature and humidity in one device.

RV & Enclosed Spaces

Compact monitoring for smaller enclosed environments.

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Product Specifications

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Simple Monitoring. Clearer Indoor Awareness.

Whether you choose the standalone PTH-9C or the smart PTH-9CW, both models are designed to make indoor CO₂ monitoring simple and easy to understand.

See the number. Understand the change. Know when to ventilate.