FABISENSE PTH-252R vs PTH-252RW Plug-in Radon Detector Buying Guide Malaysia
FABISENSE PTH-252R vs PTH-252RW Plug-in Radon Detector Buying Guide Malaysia
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The FABISENSE PTH-252R and PTH-252RW radon detectors offer continuous radon monitoring, a colour display, historical readings and adjustable alarm thresholds. Both models support desktop and plug-in use, while the PTH-252RW adds Tuya WiFi connectivity.
For buyers in Malaysia, the main choice is between local monitoring on the instrument and a connected model with app access. Measurement range, averaging periods, placement and power arrangements are also important when selecting a radon monitor.
PTH-252R vs PTH-252RW: What Is the Difference?
FeaturePTH-252RPTH-252RWRadon detectionYesYesSampling methodPassive diffusion chamberPassive diffusion chamberDetection methodAlpha spectrometryAlpha spectrometryPublished measurement range0-500 pCi/L / 0-20,000 Bq/m³0-500 pCi/L / 0-20,000 Bq/m³Unit switchingBq/m³ and pCi/LBq/m³ and pCi/LData logging and historical averagesYesYesCustomizable alarm thresholdsYesYesCalendar and timeYesYesDesktop and plug-in useYesYesWiFiNoTuya WiFiMultilanguage support11 languages listed11 languages listed
Choose the PTH-252R if you prefer to check readings directly on the device without configuring a network connection.
Choose the PTH-252RW if you require Tuya app connectivity. Confirm the available app functions, account-region compatibility and network requirements for the supplied version before ordering.
Passive Diffusion and Alpha Spectrometry
Both models list a passive diffusion chamber for sampling and alpha spectrometry as the detection method.
These specifications distinguish the series from general indoor air quality monitors that measure CO2, particles or volatile organic compounds. Select the instrument according to the pollutant you need to measure.
The supplied catalogue does not establish CO, CO2, PM2.5 or formaldehyde measurement for either model.
Understanding the Published Accuracy
The detailed specification gives performance at a reference concentration of approximately 5.4 pCi/L / 200 Bq/m³:
Measurement periodPublished accuracy / precisionAfter 7 days±10%After 2 months±5%
The catalogue uses the combined label “accuracy / precision.” These figures should therefore be quoted with their reference concentration and measurement duration, rather than presented as guaranteed accuracy for every individual reading.
When comparing instruments, ask for the full specification explaining performance across the measurement range, initial measurement time and any verification requirements.
Historical Averages from 3 Hours to 365 Days
Both models list rolling average periods of:
3 hours, 12 hours, 24 hours, 3 days, 7 days, 30 days, 120 days and 365 days.
The catalogue also mentions cumulative peak values.
These functions allow users to review different time periods on the same instrument. When comparing readings, always identify the selected averaging period. A three-hour average and a seven-day average represent different sets of measurements.
For property owners or facilities teams monitoring several rooms, keep a record of the location, monitoring dates, averaging period and instrument settings. Confirm how moving or resetting the device affects its stored history.
Dual Units: Bq/m³ and pCi/L
The PTH-252R and PTH-252RW support switching between Bq/m³ and pCi/L.
The catalogue states the conversion:
1 pCi/L = 37 Bq/m³
Use the same unit when comparing readings, preparing records or discussing results. The two measurement-range endpoints printed in the catalogue are rounded and are not exact equivalents under this conversion; confirm the supported display limits if your application requires a precise upper range.
Customizable Audible and Visual Alarms
Both models list audible and visual alarms with customizable thresholds.
The catalogue shows default colour bands in pCi/L:
Green: Below 2.7 pCi/L.
Yellow: From 2.7 to below 4 pCi/L.
Red: At or above 4 pCi/L.
These are catalogue alarm settings, not a statement of Malaysian regulatory requirements.
Before purchase, confirm the adjustable threshold range, which averaging period triggers the alarm, and how sound, mute and visual indication functions operate.
For the PTH-252RW, also confirm whether the supplied app version supports remote alarm notifications and what happens when the network is unavailable.
Plug-in Power with Battery Backup
The catalogue lists AC 110-240 V input, an internal 5 V supply arrangement and a 3.7 V, 500 mAh backup battery.
The backup battery specification does not state how long the detector operates during a power interruption. Buyers should confirm:
Compatibility of the supplied plug with Malaysian sockets.
Backup operating duration.
Whether measurement and data logging continue during an outage.
Whether WiFi remains active on backup power.
How the device indicates loss of mains power.
The desktop and plug-in options provide placement flexibility, but the final location should follow the manufacturer's radon-monitoring instructions.
Display, Languages and Operating Environment
The series features a TFT colour display, calendar and clock functions.
The specification lists 11 languages: Chinese, English, Ukrainian, Russian, Japanese, Korean, Italian, French, Polish, German and Spanish.
Published operating conditions are:
ParameterCatalogue specificationOperating temperature0°C to 40°CRelative humidityBelow 85% RH
For installations in Puchong, Kuala Lumpur, Johor or Penang, assess the actual conditions at the proposed monitoring point. Confirm placement clearances and environmental restrictions before installation.
The catalogue does not provide an ingress-protection rating, so outdoor or wet-area suitability should not be assumed.
Frequently Asked Questions
Do both models have WiFi?
No. The specification lists WiFi only for the PTH-252RW. The PTH-252R provides local monitoring without WiFi.
Can the PTH-252R record historical readings without an app?
Yes. Data logging and historical averaging are listed for both models. Confirm the available on-device history views and reset behaviour.
Are the readings instantaneous?
The catalogue lists rolling averages starting at three hours. Confirm the initial result time and display update interval rather than interpreting “real-time monitoring” as an instantaneous laboratory result.
Can either model measure other indoor pollutants?
The supplied specifications establish radon monitoring. They do not list CO2, CO, formaldehyde or PM2.5 measurement.
Is a five-year warranty included?
The catalogue advertises a five-year warranty. Confirm the applicable Malaysian warranty terms, registration requirements and service arrangements in writing before purchase.
Which model is better for monitoring a property remotely?
The PTH-252RW is the connected option. Verify the exact remote viewing, history and notification functions available through Tuya before selecting it for that purpose.
Enquire About FABISENSE Radon Detectors in Malaysia
Contact MTM Precision Sdn Bhd with your intended monitoring location, power arrangement and app requirements. Request confirmation of the supplied model, measurement documentation and warranty terms before ordering.
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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
