FABISENSE PTH-21C, PTH-21D and PTH-21E Portable Gas Detector Buying Guide Malaysia
The FABISENSE PTH-21 series offers portable CO2, CO and combined CO plus CO2 detector configurations. Based on the supplied catalogue’s measurement table, the PTH-21C measures carbon dioxide, the PTH-21D measures carbon monoxide, and the PTH-21E measures both gases.
All three models also list temperature, humidity, a buzzer alert and magnetic attachment, making model selection primarily a question of which gas readings you require.
Model clarification: The catalogue’s PTH-21D feature list includes CO2, but its measurement table lists only CO. Confirm the exact configuration before ordering.
PTH-21 Series Model Comparison
FeaturePTH-21CPTH-21DPTH-21ECO measurementNot listed01000 ppm01000 ppmCO2 measurement4005000 ppmRequires clarification4005000 ppmTemperatureListedListedListedHumidityListedListedListedBuzzer alertListedListedListedMagnetic attachmentListedListedListedBattery capacity1000 mAh1000 mAh1000 mAh
Choose by the complete model number rather than the appearance. The instruments share a similar round housing, but their listed gas measurement functions differ.
PTH-21C - Portable CO2 Monitoring
The FABISENSE PTH-21C is presented as a carbon dioxide detector with temperature and humidity readings.
The catalogue lists a CO2 range of 4005000 ppm, together with a buzzer alert and magnetic attachment.
This configuration may suit buyers who need to observe CO2 readings in occupied indoor spaces, such as offices, meeting rooms and classrooms.
CO measurement is not listed for PTH-21C. It should not be selected as a carbon monoxide alarm.
PTH-21D - CO Monitoring Configuration
The measurement table identifies the FABISENSE PTH-21D with a CO range of 01000 ppm.
It also lists temperature, humidity and a buzzer alert. However, the feature description above the table includes both CO and CO2 detection.
Obtain written confirmation of the PTH-21D sensor configuration. If combined CO and CO2 measurement is essential, the PTH-21E is the model whose measurement table explicitly lists both ranges.
PTH-21E - Combined CO and CO2 Monitoring
The FABISENSE PTH-21E combines:
CO measurement: 01000 ppm
CO2 measurement: 4005000 ppm
Temperature
Relative humidity
Buzzer alert
Magnetic attachment
This configuration is worth considering when both gas readings are required in one portable instrument.
Befor purchase, confirm how users switch between readings, whether both gases are monitored continuously and how the alarm responds to each parameter.
Temperature, Humidity and Physical Specifications
The supplied catalogue lists the following shared specifications:
ParameterCatalogue specificationTemperature range10°C to 50°CStated temperature accuracy±1.5°CHumidity range095% RHStated humidity accuracy±5% RHBattery1000 mAh lithium-polymerCharging connectionUSB Type-CWorking temperature10°C to 50°CDimensions73 × 73 × 25 mm
Battery runtime and charging time are not stated on the supplied page.
The charging entry includes a maximum voltage reference that requires clarification. Use the charging supply specified in the correct product manual.
Understanding the Gas Performance Entries
The catalogue places percentage-based tolerance expressions in a row labelled “Resolution.” These entries should not be advertised as display resolution.
For CO, the table prints ±5 ppm or ±10%, whichever is greater. For CO2, it prints a formula involving 50 ppm and 5% of reading, but the mathematical notation requires clarification.
Ask for the current datasheet to confirm:
Actual display resolution
Measurement accuracy and calculation method
Conditions under which accuracy applies
Response time
Calibration requirements
The page does not identify the gas sensor technologies. Electrochemical CO sensing or NDIR CO2 sensing should not be claimed without supporting documentation.
Magnetic Attachment and Portable Use
The catalogue lists a magnetic attachment function for all three models and illustrates a wrist strap.
Magnetic attachment can provide a convenient way to position the instrument on a suitable metal surface. However, the mounting location must still follow the manufacturer’s placement instructions.
Avoid selecting a position solely because a metal surface is available. Local heat, airflow, obstructions and proximity to a gas source can affect how representative a reading is.
Applications for Malaysian Buyers
Offices and Meeting Rooms
The PTH-21C may interest users who need portable CO2 readings alongside temperature and humidity. Record occupancy, ventilation conditions and instrument position when comparing readings.
Property and Facilities Checks
Facilities teams in Puchong, Kuala Lumpur, Johor and Penang can select a configuration according to the gas being investigated and the required measurement documentation.
Combined Gas Observation
The PTH-21E offers both CO and CO2 ranges in the catalogue table. Confirm sensor performance and alarm behaviour before choosing it for a particular monitoring task.
For any application requiring certified alarms or documented assessment, check the exact model’s supporting documents before selection.
What Should You Confirm About the Buzzer Alert?
A buzzer is listed across the range, but the supplied page does not establish:
span style="color:#000000;">Alarm concentration thresholds.
Activation delays.
Audible output level.
Adjustable settings.
Sensor fault warnings.
End-of-life indication.
A listed buzzer does not, by itself, establish certified CO alarm performance. Request model-specific alarm and certification information where that function is required.
Frequently Asked Questions
Which model measures CO2 only?
The catalogue identifies PTH-21C as the CO2 model, with temperature and humidity readings.
Which model measures both CO and CO2?
The measurement table explicitly lists both gases for PTH-21E.
Does PTH-21D measure CO2?
The page contains conflicting information. Its feature list includes CO2, while its measurement table lists only CO. Confirm the supplied configuration before ordering.
Does this series support an app?
Wi-Fi, Bluetooth and app connectivity are not listed on the supplied page.
Can these detectors record and export readings?
Data logging and export functions are not specified.
Do they measure oxygen or combustible gas?
Oxygen and combustible gas measurement are not listed. These specifications do not establish suitability as confined-space multi-gas detectors.
Are the detectors waterproof?
An IP rating or waterproof specification is not provided on this page.
Enquire About FABISENSE PTH-21 Series Malaysia
Contact MTM Precision Sdn Bhd to discuss the FABISENSE PTH-21C, PTH-21D and PTH-21E portable gas detectors.
Share the gases you need to measure, your intended environment and any required calibration or certification documents so the appropriate configuration can be checked. Model specifications and availability are subject to confirmation.
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Compare FABISENSE PTH-21C, PTH-21D and PTH-21E gas detectors in Malaysia. Explore CO, CO2, temperature and humidity functions with MTM Precision.
MTM Precision Sdn Bhd
Showroom & Service Centre: No. 29-1 & 29-2, Jalan Bandar 18, Pusat Bandar Puchong, 47160 Puchong, Selangor, Malaysia
Tel: 03-8080 7172
WhatsApp: +6016-660 7346
Email: mtmpre@yahoo.com
Website: www.mtmpre.com.my
22 Oct 2026
