PT221B Bluetooth Temperature and Humidity Clock with Tuya Smart Malaysia
PT221B Bluetooth Temperature and Humidity Clock with Tuya Smart Malaysia
Content
The PT221B Temperature and Humidity Clock combines a digital clock, calendar, alarm and room-condition display with Bluetooth connectivity to the Tuya Smart app.
For homes and offices in Malaysia, it offers local temperature and humidity readings in a compact, battery-powered unit. The key difference from the standard PT221 is the PT221B's listed Bluetooth and Tuya Smart connection.
PT221B Product Specifications
ParameterCatalogue specificationTemperature range-10æ³C to 50æ³CTemperature errorå€1æ³CTemperature resolution0.1æ³CHumidity range20-90% RHHumidity errorå€5%Humidity resolution1% RHTime format12-hour or 24-hourWireless connectionBluetoothAppTuya SmartPower supply2 x 1.5 V AAA batteriesDimensions82 x 82 x 21 mm
The catalogue marks batteries as optional. Confirm battery inclusion when ordering.
Clock, Calendar and Room Readings Together
The PT221B displays the time, date, weekday, temperature and relative humidity. An alarm function is also listed.
This combination suits desks, bedside tables and reception counters where users want an everyday clock alongside local room readings.
For a home office in Puchong or Kuala Lumpur, the display provides a convenient reference without requiring a phone connection for every check. Confirm the available alarm settings, sound options and snooze function for the supplied version.
Bluetooth Connection to Tuya Smart
The catalogue specifically identifies Bluetooth as the wireless connection.
Buyers should confirm the functions available through the PT221B's Tuya Smart interface, including whether it supports viewing readings, adjusting settings or synchronizing time.
The supplied page does not specify:
Bluetooth communication range.
Historical graph storage.
Data export.
Temperature or humidity notifications.
Gateway compatibility.
Remote access while away from the device.
Bluetooth connectivity alone does not establish access from outside the premises. If remote monitoring is required, ask whether the exact model supports a compatible gateway and which functions remain available through it.
PT221 vs PT221B: Which Should You Choose?
Selection pointPT221PT221BLocal temperature and humidity displayListedListedClock and calendarListedListedTemperature range-10æ³C to 50æ³C-10æ³C to 50æ³CHumidity range20-90% RH20-90% RHBluetoothNot listed on its supplied pageListedTuya Smart appNot listed on its supplied pageListedPower2 x AAA batteries2 x AAA batteriesDimensions82 x 82 x 21 mm82 x 82 x 21 mm
Choose the PT221 when your requirement is a straightforward local display.
Choose the PT221B when you want the listed Bluetooth app connection, after confirming that its supported functions match your needs.
Understanding Accuracy and Resolution
The PT221B displays temperature in 0.1æ³C increments, while its published temperature error is å€1æ³C.
These values describe different characteristics. A reading with one decimal place does not mean the instrument is accurate to 0.1æ³C.
Similarly, the humidity display has 1% RH resolution, with a listed error of å€5%.
For general room checks, these specifications help buyers compare instruments. Applications requiring tighter tolerances or documented records should be matched to suitable measurement and calibration requirements.
Placement for Meaningful Room Readings
Place the PT221B where it can represent the conditions you want to observe.
Avoid direct sunlight, heat from electronic equipment and direct air-conditioner airflow. These local influences can cause the displayed reading to differ from conditions elsewhere in the room.
After moving the device, allow the readings to stabilize before comparing results. The catalogue does not specify a response time.
For offices in Selangor, Johor or Penang, keeping the instrument in a consistent position makes routine observations easier to compare.
Battery Power and Everyday Use
The PT221B uses two 1.5 V AAA batteries, allowing placement without a mains cable.
Battery runtime is not stated in the supplied specifications. Confirm the recommended battery type, low-battery indication and whether clock settings are retained during replacement.
The catalogue does not list an external power input or rechargeable battery.
Room Display or Environmental Data Logger?
The PT221B is presented as a temperature and humidity clock with Bluetooth app connectivity. The supplied page does not establish continuous historical recording or reporting capability.
If your application requires storage records, inspection evidence or readings collected while a phone is disconnected, confirm:
Whether measurements are stored inside the device.
Recording interval and memory capacity.
Data retention when batteries are replaced.
Export formats.
Calibration documentation.
These requirements are particularly relevant when selecting equipment for stockrooms, archives or quality-control work.
Frequently Asked Questions
Does the PT221B connect directly to WiFi?
The catalogue lists Bluetooth, not direct WiFi connectivity.
Which app does it use?
The specified app is Tuya Smart. Confirm compatibility and available functions for the supplied device version.
Can I check readings when I am away from the office?
Remote access is not established by the supplied page. Confirm gateway support and the required connection arrangement before purchase.
Does it have an alarm?
Yes. An alarm function is advertised, but detailed settings and snooze behaviour are not specified.
Does it record temperature and humidity history?
History storage and data export are not specified. App connectivity should not be treated as confirmation of data logging.
Can it measure outdoor conditions?
The supplied page does not list weather protection or an outdoor sensor. Confirm suitability before considering outdoor placement.
Is a calibration certificate included?
The catalogue does not state that one is included. Specify any calibration or documentation requirements when enquiring.
Enquire About the PT221B in Malaysia
Contact MTM Precision Sdn Bhd with your intended application and app requirements. Whether you need a local room display, Bluetooth access or recorded environmental data, confirm the required functions before selecting your instrument.
SEO Meta Description: Explore the PT221B Bluetooth temperature and humidity clock with Tuya Smart, calendar and alarm functions. Enquire with MTM Precision Malaysia.
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
