PTH-9D vs PTH-9DW Carbon Monoxide Detector Comparison Malaysia
PTH-9D vs PTH-9DW Carbon Monoxide Detector Comparison Malaysia
Content
The PTH-9D and PTH-9DW carbon monoxide detectors combine CO measurement, temperature, humidity and audible alerts in a compact desktop instrument.
The main difference is connectivity. The PTH-9D provides local readings, while the PTH-9DW adds 2.4 GHz WiFi and Tuya Smart app support.
For buyers in Malaysia, choose according to the required viewing method, alarm behaviour and measurement documentation.
PTH-9D vs PTH-9DW: Main Differences
FeaturePTH-9DPTH-9DWCarbon monoxide measurementYesYesTemperature and humidityYesYesVisual indication barListedListedBuzzer alertListedListedLow-battery alarmListedListedAdjustable CO sound-alarm valueListedListedWiFiNo2.4 GHz onlyApp platformNone listedTuya Smart
Choose the PTH-9D when users will check the instrument directly. Consider the PTH-9DW when connected viewing is required, after confirming the supported app functions.
Published CO Specifications
Both models list the same CO measurement specifications.
ParameterCatalogue specificationCO measurement range0-500 ppmCO accuracyå€10%CO resolution1 ppmDefault CO alarm value150 ppmAdjustable sound-alarm settingListedCO response timeLess than 60 seconds
The 150 ppm value is a catalogue default alarm setting. It should not be presented as a universal exposure limit or a statement of Malaysian regulatory requirements.
The supplied page does not define the basis of the å€10% accuracy figure or the test conditions for the response time. Request these details when documented performance is required.
Measurement Response and Alarm Timing
The listed response time of less than 60 seconds describes an advertised response characteristic. It does not, by itself, establish the complete alarm activation schedule.
Before ordering, confirm the adjustable alarm range, activation delays, sound level, mute behaviour and reset procedure.
For applications requiring a certified CO alarm, request the relevant model-specific compliance documents. The supplied page does not establish certified alarm performance.
Temperature and Humidity Readings
ParameterBoth modelsTemperature range0æ³C to 50æ³CTemperature accuracyå€1.5æ³CTemperature resolution1æ³CHumidity range20-80% RHHumidity accuracyå€5%Humidity resolution1% RH
These readings provide local room-condition information alongside the CO display.
When comparing instruments, consider their measurement tolerances and allow them to stabilize in the same location. Display resolution and measurement accuracy are different specifications.
PTH-9DW WiFi and Tuya Smart
The PTH-9DW supports 2.4 GHz WiFi networks and lists Tuya Smart as its app platform.
Before selecting it for remote monitoring, confirm:
Which readings are available through the app.
Reading-update frequency.
Whether remote alarm notifications are supported.
Historical data retention and export.
Behaviour during a network interruption.
Account-sharing options.
The supplied page does not establish all these functions. WiFi connectivity alone should not be treated as a guarantee of remote alarm delivery.
The PTH-9D specification marks WiFi and app support as unavailable.
Battery Power and Type-C Charging
Both models list a 2000 mAh Li-Po battery and Type-C charging input at 5 V, 1 A.
Their published dimensions are 98 x 90 x 40 mm.
Battery runtime and charging duration are not stated. Confirm whether continuous operation while charging is supported and whether the PTH-9DW maintains WiFi communication throughout battery operation.
For continuous monitoring, establish the power arrangement and low-battery warning behaviour before installation.
Placement for Homes and Offices
For a property in Puchong, Selangor or Kuala Lumpur, follow the manufacturer's instructions for CO-detector placement and clearances. The fireplace illustration is promotional imagery and should not be used as an installation diagram.
Keep sensing openings unobstructed and confirm the instrument's permitted operating conditions.
For managed premises in Johor or Penang, record the model, location and maintenance requirements. Include routine testing and any manufacturer-specified sensor checks in the operating procedure.
What These Models Do Not Establish
The supplied page lists CO, temperature and humidity. It does not list:
Carbon dioxide measurement.
Smoke detection.
Combustible gas detection.
Oxygen measurement.
Hazardous-area approval.
Select the instrument according to the actual target gas. CO and CO2 are separate measurements, despite their similar names.
Frequently Asked Questions
What is the difference between PTH-9D and PTH-9DW?
The PTH-9DW adds 2.4 GHz WiFi and Tuya Smart support. Their published measurement specifications are the same.
Can the PTH-9DW connect to a 5 GHz-only network?
The catalogue specifies 2.4 GHz WiFi only.
Can the CO alarm setting be changed?
An adjustable sound-alarm value is listed for both models. Confirm the adjustment range and alarm logic in the manual.
Does either model measure CO2?
No CO2 measurement is listed.
Is the default 150 ppm alarm setting a safe exposure limit?
It is a device setting, not a universal exposure limit. The catalogue does not establish an exposure-assessment method.
Does the PTH-9DW send phone notifications?
Tuya Smart support is listed, but notification capability and delivery conditions require confirmation.
Is a calibration certificate included?
The supplied page does not state that one is included. Specify any calibration or reporting requirements before purchase.
Enquire About PTH-9D and PTH-9DW in Malaysia
Contact MTM Precision Sdn Bhd with your intended application, power arrangement and connectivity requirements. Request confirmation of the alarm behaviour, sensor documentation and Tuya Smart functions before selecting the appropriate model.
SEO Meta Description: Compare PTH-9D and PTH-9DW CO detectors in Malaysia, including temperature, humidity, adjustable alerts 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
24 Oct 2026
