PTH-9B vs PTH-9BW Multifunctional Air Quality Detector Comparison Malaysia
PTH-9B vs PTH-9BW Multifunctional Air Quality Detector Comparison Malaysia
Content
The PTH-9B and PTH-9BW multifunctional air quality detectors combine several indoor measurements on one display, including CO2, PM2.5, PM10, formaldehyde, TVOC, temperature and humidity. Both models also list a C6H6 reading, an AQI display, time and calendar functions.
The main difference is connectivity: the PTH-9B provides local monitoring, while the PTH-9BW adds 2.4 GHz WiFi and Tuya Smart support.
For buyers in Malaysia, the choice depends on whether readings are needed directly at the instrument or through a connected platform.
PTH-9B vs PTH-9BW: Main Differences
FeaturePTH-9BPTH-9BWCO2 measurementListedListedPM2.5 and PM10ListedListedFormaldehyde, HCHOListedListedTVOCListedListedC6H6 channelListed; sensing method requires confirmationListed; sensing method requires confirmationTemperature and humidityListedListedAQI and AQI excess alertListedListedTime and calendarListedListedWiFiNo2.4 GHz onlyAppNoTuya Smart
Choose the PTH-9B when an on-device display meets your needs. Choose the PTH-9BW when you require the advertised WiFi connection, after confirming the available app functions.
Published Measurement Specifications
The catalogue lists the same measurement specifications for both models.
ParameterRangePublished accuracyResolutionFormaldehyde0-2 mg/m鲁Not specified0.01 mg/m鲁CO2400-5000 ppm卤(50 ppm 卤5%), as printed1 ppmPM2.50-1000 碌g/m鲁卤10%1 碌g/m鲁PM100-1000 碌g/m鲁卤10%1 碌g/m鲁C6H60-3 mg/m鲁卤10%0.01; unit omittedTVOC0-5 mg/m鲁卤15%0.01 mg/m鲁Temperature-10掳C to 40掳C卤2掳C1掳CHumidity20-80% RH卤5%1% RHAQI0-500Not specifiedNot specified
The CO2 accuracy expression contains ambiguous notation. Confirm the intended calculation, reference conditions and percentage basis before using it in a purchasing specification.
The page also does not state the test conditions or concentration intervals over which the listed accuracy figures apply.
CO2, Particles and Gas Readings on One Screen
The integrated display allows users to observe several measurements without switching between separate instruments.
For an office in Puchong, Selangor or Kuala Lumpur, this arrangement can support routine observation of room conditions. Record the individual readings and measurement units when comparing locations.
CO2, PM2.5, PM10, HCHO and TVOC are different parameters. A change in one reading should not be assumed to explain every change in the others.
The supplied page does not identify the sensor technology for each channel. An NDIR CO2 sensor, laser particle sensor or electrochemical formaldehyde sensor should therefore be confirmed rather than assumed.
What Does the C6H6 Reading Establish?
The catalogue explicitly lists a C6H6 channel, with a range of 0-3 mg/m鲁 and advertised accuracy of 卤10%.
However, it does not explain whether this is a selective benzene measurement, a calculated estimate or a response from a broader gas sensor.
Before choosing either model for a benzene-specific task, request:
The sensor type and measurement principle.
Selectivity and cross-sensitivity information.
The calibration gas and verification procedure.
A test report for the finished instrument.
Applicable measurement conditions.
A C6H6 label on the display alone does not establish selective benzene measurement. Applications requiring documented benzene results should be matched to a suitable validated measurement method.
Understanding the AQI Display
Both models list an AQI scale from 0 to 500 and an AQI excess alert.
The supplied page does not identify the calculation method, averaging period or pollutants used to generate that index. Confirm these details before comparing the displayed AQI with an external reporting system.
For useful records, retain the underlying numerical readings, such as PM2.5 in 碌g/m鲁, alongside any displayed index.
PTH-9BW WiFi and Tuya Smart
The PTH-9BW supports 2.4 GHz WiFi networks and lists Tuya Smart as its app platform.
Before purchase, confirm which channels are available through the app and whether the supplied version supports historical graphs, notifications or data export.
Also check the recording interval, retention period and behaviour during a network interruption. These functions are not detailed on the catalogue page.
The PTH-9B specification marks both WiFi and app support as unavailable.
Battery Power and Type-C Charging
Both models list:
2400 mAh lithium battery.
Type-C charging input at 5 V, 1 A.
98 x 90 x 40 mm dimensions.
Battery runtime and charging duration are not stated. Confirm whether continuous operation while charging is supported and whether the PTH-9BW's WiFi affects runtime.
For desktop placement, leave the sensor openings unobstructed and follow the manufacturer's clearance instructions. Avoid direct sunlight, nearby heat sources and direct air-conditioner discharge.
Selecting for Homes, Offices and Greenhouses
The catalogue illustrates bedroom, office and greenhouse applications.
For homes and offices, consider display readability, required gas channels and whether connected viewing is needed.
For greenhouse enquiries in Johor or Penang, check expected humidity and temperature against the published ranges. The listed humidity range ends at 80% RH, and the supplied page does not establish weatherproof construction or control-system integration.
For inspection, quality-control or formal assessment work, specify calibration, reporting and measurement-method requirements separately.
Frequently Asked Questions
What is the main difference between PTH-9B and PTH-9BW?
The PTH-9BW adds 2.4 GHz WiFi and Tuya Smart support. The catalogue lists matching measurement ranges for both models.
Does either model detect carbon monoxide?
CO measurement is not listed. CO2 is carbon dioxide, a separate measurement.
Do both models display PM2.5 and PM10?
Yes. Both particle channels are listed with ranges of 0-1000 碌g/m鲁.
Can the C6H6 channel be used as proof of benzene concentration?
The catalogue does not establish the channel's selectivity or validation method. Request supporting documentation before selecting it for benzene-specific measurements.
Does the PTH-9BW connect to a 5 GHz-only network?
The supplied specification lists 2.4 GHz WiFi only.
Can I export historical readings?
Data export and detailed logging functions are not specified. Confirm the available Tuya functions for the supplied version.
Is a calibration certificate included?
The page does not state that a certificate is included. Specify any calibration and documentation requirements before ordering.
Enquire About PTH-9B and PTH-9BW in Malaysia
Contact MTM Precision Sdn Bhd with your target parameters, intended location and connectivity requirements. Request confirmation of the sensor specifications, C6H6 measurement method and app functions before selecting the appropriate model.
SEO Meta Description: Compare PTH-9B and PTH-9BW air quality detectors in Malaysia, covering CO2, particles, HCHO, TVOC and Tuya WiFi 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
23 Oct 2026
