Product Description

Know Your Indoor CO₂ Levels at a Glance

Keep track of the air around you with the FABISENSE PTH Series CO₂ Monitor.

Powered by NDIR sensing technology, the PTH Series provides real-time carbon dioxide readings from 400 to 5000 ppm with 1 ppm resolution.

Choose from three versions depending on how much information and connectivity you need — from straightforward CO₂ monitoring to temperature and humidity readings, or full Wi-Fi monitoring through the Tuya Smart App.

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Choose the Version That Fits Your Needs

PTH-4 → Essential CO₂ Monitoring
PTH-5 → CO₂ + Temperature & Humidity
PTH-8 → Smart Wi-Fi CO₂ Monitoring

Which Model Should I Choose?

Choose PTH-4 if...

You mainly want to know:

“What is the CO₂ level in this room?”

Simple, straightforward and easy to use.

Choose PTH-5 if...

You also want to know:

“What are the temperature and humidity?”

A better choice for everyday indoor environment monitoring.

Choose PTH-8 if...

You want:

CO₂ + Temperature + Humidity + Wi-Fi + App + Historical Data + Audible Alert

Choose this version when smart monitoring and remote access are important.

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PTH-4

Simple CO₂ Monitoring for Everyday Spaces

The PTH-4 is designed for customers who want a simple and easy way to check indoor carbon dioxide levels without unnecessary connected features.

The large digital display shows the current CO₂ concentration clearly, while the comfort indicator gives you a quick visual reference for changing indoor conditions.

Best for

Home · Bedroom · Office · Study Room · Classroom

Key Features

Real-Time CO₂ Monitoring
Monitor carbon dioxide concentrations from 400–5000 ppm.

NDIR Sensor Technology
Uses an NDIR CO₂ sensor for stable, long-term monitoring.

1 ppm Resolution
Clearly displays changes in indoor CO₂ concentration.

Comfort Indicator
An easy-to-understand visual indicator helps you interpret the current environment at a glance.

Rechargeable 2400mAh Battery
Use the monitor around different rooms without keeping it permanently connected to a power source.

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PTH-5

CO₂, Temperature & Humidity in One Display

The PTH-5 adds temperature and humidity monitoring to the core CO₂ functions of the PTH-4.

Instead of checking several separate devices, you can see CO₂, temperature and relative humidity together on one compact monitor.

Best for

Bedroom · Home Office · Living Room · Nursery · Classroom

Key Features

3-in-1 Indoor Monitoring

Monitor:

CO₂
Temperature
Humidity

on one easy-to-read display.

NDIR CO₂ Sensor

Continuously monitors carbon dioxide concentrations between 400 and 5000 ppm.

Temperature Monitoring

Operating temperature range:

-10°C to 40°C

Humidity Monitoring

Humidity measurement range:

20%–80% RH

Comfort Emoji

Quickly understand changing indoor conditions without having to interpret every number individually.

2400mAh Rechargeable Battery

Compact and rechargeable for flexible placement around your home or workspace.

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PTH-8

Smart Wi-Fi CO₂ Monitoring

For customers who want to monitor indoor air conditions beyond the device itself, choose the PTH-8.

It combines CO₂, temperature and humidity monitoring with 2.4GHz Wi-Fi connectivity and Tuya Smart App support, allowing you to view readings and historical changes from your smartphone.

Best for

Home · Office · Bedroom · Classroom · Remote Monitoring

Key Features

CO₂ + Temperature + Humidity

Monitor three important indoor environmental readings from one compact device.

2.4GHz Wi-Fi Connectivity

Connect the monitor to your Wi-Fi network for smart monitoring.

PTH-8 supports 2.4GHz Wi-Fi networks.

Works with Tuya Smart App

Check monitored data directly from your smartphone through the Tuya Smart ecosystem.

View Historical Trends

Instead of seeing only the current reading, use the app to understand how indoor conditions change over time.

Built-In Buzzer Alert

The PTH-8 includes an audible alert to draw attention when monitored conditions require notice.

Rechargeable 2400mAh Battery

Use it on a desk, bedside table, shelf or in different rooms without being permanently tied to one location.

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Why Monitor Indoor CO₂?

CO₂ levels can rise in enclosed or poorly ventilated spaces as people breathe.

Monitoring the concentration can help you better understand when indoor ventilation conditions are changing.

The PTH Series makes these changes easy to see, whether you only need a simple CO₂ reading or want a connected monitor with historical data.

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Clear Digital Display

Important Information Without the Clutter

The round display presents the most important information front and center.

Depending on the model selected, you can view:

CO₂ concentration
Temperature
Humidity
Comfort status
Battery status

The clean interface makes the monitor suitable for bedrooms, offices, classrooms and other everyday indoor spaces.

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NDIR CO₂ Sensing Technology

Designed for Reliable Long-Term Monitoring

All three models use an NDIR carbon dioxide sensor rather than estimating CO₂ from other air-quality measurements.

CO₂ Measurement Range:

400–5000 ppm

Resolution:

1 ppm

CO₂ Accuracy:

±(50 ppm ±5%)

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Compact & Rechargeable

With a compact body measuring approximately:

83 × 83 × 32 mm

the PTH Series can sit naturally on a bedside table, desk, shelf or workstation.

All three models feature a:

2400mAh rechargeable lithium battery

and use:

Micro USB 5V / 1A charging.

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Technical Specifications