1. Pengenalan
This manual provides detailed instructions for the safe and effective use of the Walfront PM6508 Digital Temperature Humidity Meter. This device is designed for high-precision measurement of ambient temperature and relative humidity, offering features such as data hold, backlight display, and wet bulb/dew point temperature calculations. It is suitable for various applications including home, office, industrial settings, and environmental monitoring.
2. Maklumat Keselamatan
Please read and understand all safety warnings and operating instructions before using this instrument. Failure to follow these instructions may result in electric shock, fire, or injury.
- Do not operate the meter if it appears damaged or if the battery cover is not properly closed.
- Avoid exposing the meter to extreme temperatures, direct sunlight, or high humidity for prolonged periods.
- Do not attempt to repair or modify the meter. Refer all servicing to qualified personnel.
- Tanggalkan bateri jika meter tidak digunakan untuk tempoh yang lama bagi mengelakkan kebocoran.
- Keep the sensor area clean and free from obstructions to ensure accurate readings.
3. Produk Lebihview
The Walfront PM6508 is a compact and portable digital meter designed for accurate environmental measurements. It features an easy-to-read LCD display with backlight and intuitive button controls.

Rajah 3.1: Depan view of the Walfront PM6508 meter with key components labeled. This includes the temperature and humidity sensor at the top, the HD display, various control buttons (Power, Max/Min, Data Hold, Data Storage, Unit Switch, Backlight), and an anti-fall protective sleeve.
3.1 Ciri-ciri Utama
- Penderia Ketepatan Tinggi: Provides accurate temperature and humidity readings.
- Paparan LCD dengan Lampu Latar: Memastikan kebolehbacaan yang jelas dalam pelbagai keadaan pencahayaan.
- Fungsi Pegangan Data: Membekukan bacaan semasa pada paparan.
- Penyimpanan Data: Stores up to 100 groups of measurement data.
- Wet Bulb & Dew Point Temperature: Calculates and displays these critical environmental parameters.
- Penukaran Unit: Tukar dengan mudah antara Celsius (°C) dan Fahrenheit (°F).
- Penutupan Automatik: Menjimatkan hayat bateri.
- Penunjuk Kuasa Rendah: Makluman apabila bateri memerlukan penggantian.
3.2 Kandungan Pakej

Rajah 3.2: The Walfront PM6508 meter shown alongside its portable storage bag, indicating typical package contents.
- Walfront PM6508 Digital Temperature Humidity Meter
- Beg Simpanan Mudah Alih
- Manual Pengguna
4. Persediaan
4.1 Pemasangan Bateri
The PM6508 meter requires 4 x 1.5V AAA batteries (not included) for operation.
- Cari penutup petak bateri di belakang meter.
- Luncurkan penutup bateri ke bawah untuk membukanya.
- Insert four AAA batteries, ensuring correct polarity (+ and -) as indicated inside the compartment.
- Gantikan penutup bateri dengan menggelongsorkannya semula ke kedudukannya sehingga ia berbunyi dengan selamat.

Rajah 4.1: belakang view of the meter showing the open battery compartment for AAA battery installation.
5. Arahan Operasi
5.1 Hidupkan/Mati Kuasa
- Tekan ke green power button (
) to turn the meter on. - Tekan dan tahan butang gray power button (
) for approximately 2 seconds to turn the meter off. The meter also features an automatic shut-down function to conserve battery life.
5.2 Mengambil Ukuran
Once powered on, the meter will immediately begin displaying real-time temperature and humidity readings on the LCD screen. Ensure the sensor at the top of the device is exposed to the environment you wish to measure.

Rajah 5.1: The meter in use, displaying temperature and humidity readings on its LCD screen.
5.3 Pensuisan Unit (°C/°F)
To switch between Celsius (°C) and Fahrenheit (°F) temperature units:
- Tekan ke Butang °C/°F (
) located on the keypad. The display will update to show readings in the selected unit.
5.4 Fungsi Lampu Latar
To activate or deactivate the display backlight:
- Tekan ke butang lampu latar (
) to toggle the backlight on or off. This is useful for reading in low-light conditions.
5.5 Pegangan Data (H)
To freeze the current readings on the display:
- Tekan ke butang H (
). The "H" icon will appear on the display, indicating that the data is held. - Tekan ke butang H again to release the data hold and resume real-time measurements.
5.6 Maximum/Minimum (MIN/MAX) Measurement
Kepada view the maximum or minimum recorded values:
- Tekan ke Butang MIN/MAX (
) once to display the maximum temperature and humidity recorded since the meter was powered on or the function was reset. - Tekan ke Butang MIN/MAX again to display the minimum temperature and humidity.
- Tekan ke Butang MIN/MAX a third time to exit the MIN/MAX mode and return to real-time readings.
5.7 Data Storage (MEM) and Retrieval (READ)
The meter can store up to 100 groups of measurement data.
- Untuk Menyimpan Data: Tekan ke Butang MEM (
) to save the current temperature and humidity readings. The display will briefly show a memory location number. - To Retrieve Data: Tekan ke butang BACA (
) to enter data retrieval mode. Use the Butang MEM to scroll through stored data records. - To Exit Retrieval: Tekan ke butang BACA again to exit data retrieval mode.
5.8 Wet Bulb (WB) and Dew Point (DP) Temperature
To display Wet Bulb or Dew Point temperatures:
- Tekan ke DP/WB button (
) once to display the Dew Point temperature. - Tekan ke DP/WB button again to display the Wet Bulb temperature.
- Tekan ke DP/WB button a third time to return to standard temperature and humidity display.
6. Penyelenggaraan
6.1 Pembersihan
- Lap meter casing dengan lembut, damp kain. Jangan gunakan pembersih atau pelarut yang melelas.
- Keep the sensor area clean and free from dust or debris to ensure accurate readings. Do not insert any objects into the sensor opening.
6.2 Penyimpanan
- When not in use for extended periods, remove the batteries to prevent leakage and damage to the device.
- Simpan meter di tempat yang sejuk dan kering, jauh daripada cahaya matahari langsung dan suhu yang melampau.
- Utilize the provided portable storage bag for protection during storage and transport.
7. Penyelesaian masalah
| Masalah | Kemungkinan Punca | Penyelesaian |
|---|---|---|
| Meter tidak dihidupkan. |
|
|
| Bacaan yang tidak tepat. |
|
|
| Paparan malap atau berkelip. |
|
|
| Cannot store or retrieve data. |
|
|
8. Spesifikasi
The following table outlines the technical specifications for the Walfront PM6508 Digital Temperature Humidity Meter.


Rajah 8.1: Detailed technical specifications including ranges, resolution, and precision for temperature, humidity, wet bulb, and dew point measurements, along with general parameters.
| Parameter | Nilai |
|---|---|
| Model | PM6508 |
| Julat Suhu Ambien | -20 hingga 60 °C (-4 hingga 140 °F) |
| Ambient Temperature Precision | ±1.5 °C (-20 to 0 °C, 45 to 60 °C), ±0.5 °C (0 to 45 °C) |
| Julat Kelembapan Relatif | 0% - 100% RH |
| Relative Humidity Precision | ±4.0% (0-20%, 80-100%), ±3.0% (20-80%) |
| Julat Suhu Mentol Basah | -20 hingga 60 °C (4 hingga 140 °F) |
| Wet Bulb Temperature Precision | ±1.5 °C (-20 to 0 °C, 45 to 60 °C), ±0.5 °C (0 to 45 °C) |
| Julat Suhu Titik Embun | -50 hingga 60 °C (-58 hingga 140 °F) |
| Dew Point Temperature Precision | ±1.5 °C (-50 to 0 °C, 45 to 60 °C), ±0.5 °C (0 to 45 °C) |
| Resolusi | 0.1 °C / °F / %RH |
| Penyimpanan Data | 100 kumpulan |
| Bekalan Kuasa | 4 x Bateri AAA 1.5V (tidak termasuk) |
| Dimensi (L x W x H) | 180 x 60 x 29 mm (7.1 x 2.4 x 1.1 inci) |
| Berat badan | 254 g (9 oz) |
| Kelembapan Operasi | 0% - 100% (non-condensing) |
9. Aplikasi
The Walfront PM6508 is suitable for a wide range of applications requiring accurate temperature and humidity monitoring.

Rajah 9.1: Examples of environments where the PM6508 meter can be effectively used for temperature and humidity monitoring.
- Residential and Office Environments: Monitoring indoor climate for comfort and health.
- Industrial Production: Ensuring optimal conditions for manufacturing processes.
- Warehousing and Storage: Protecting goods sensitive to temperature and humidity, such as in wine cellars or general storage.
- Pertanian: Monitoring conditions in planting sheds, greenhouses, and aquaculture.
- Research and Development Laboratories: Maintaining precise environmental controls for experiments.
- Sistem HVAC: Assisting in the evaluation and maintenance of heating, ventilation, and air conditioning systems.
10. Waranti dan Sokongan
Walfront products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please refer to the contact information provided with your purchase or visit the official Walfront webtapak. Sila simpan bukti pembelian anda untuk tuntutan waranti.