1. Pengenalan
The AOPUTTRIVER AP-8801B is a digital light meter designed for accurate measurement of illuminance. It features a wide measurement range, high precision, and various functions including data hold, maximum/minimum value tracking, data storage, and environmental temperature display. This manual provides detailed instructions for the proper use and maintenance of your device.
2. Maklumat Keselamatan
- Baca semua arahan dengan teliti sebelum mengendalikan peranti.
- Jangan dedahkan peranti kepada suhu yang melampau, kelembapan atau cahaya matahari langsung.
- Elakkan hentaman kuat atau menjatuhkan peranti.
- Jauhkan peranti daripada air dan cecair lain.
- Jangan cuba membuka atau mengubah suai peranti ini. Pembaikan hanya boleh dilakukan oleh kakitangan yang berkelayakan.
- Buang bateri mengikut peraturan tempatan.
3. Produk Lebihview
3.1 Komponen
The AP-8801B Digital Light Meter consists of a main unit with an LCD display, control buttons, and a rotatable light sensor.

Figure 1: AP-8801B Digital Light Meter with labeled components.
- Pengesan Cahaya: Sensor untuk mengukur keamatan cahaya.
- Paparan Skrin LCD: Menunjukkan bacaan ukuran, unit dan penunjuk lain.
- Hold Key/Range Key: Press briefly to hold data; long press to switch auto range mode.
- Max/Min Selection Key: Tekan untuk view maximum or minimum recorded data.
- Butang REC: Short press to record data; long press to view data yang disimpan.
- REL/UP Key: Press to enter relative value mode; long press to view data yang direkodkan.
- MODE Key (Lux/FC, °C/°F): Press to select Lux/FC units; long press to select Celsius/Fahrenheit units.
- Butang Tukar: Butang hidup/mati.
- Shell Pelindung: Memberikan ketahanan dan perlindungan untuk peranti ini.
3.2 Ciri-ciri Utama
- Measurement Range: Up to 400,000 Lux / 40,000 FC.
- High Brightness LCD: Black and white display for clear readability in various lighting conditions.
- 270° Rotatable Sensor: The light sensor can be rotated 270° to the left and 90° to the right for flexible measurement angles.
- Data Hold: Freezes the current measurement on the display.
- Max/Min Data Hold: Records and displays the maximum and minimum measured values.
- Data Storage: Stores measurement data for later review.
- Auto Zero: Resets the measurement to zero.
- Auto/Manual Ranging: Automatically selects the appropriate measurement range or allows manual selection.
- Relative Value Measurement: Measures the difference from a reference value.
- Environmental Temperature Display: Shows ambient temperature in Celsius or Fahrenheit.
- Low Battery Indication: Alerts when battery power is low.

Figure 2: The AP-8801B with its rotatable light sensor and clear LCD display.
4. Persediaan
4.1 Pemasangan Bateri
The AP-8801B requires one 9V battery for operation. To install or replace the battery:
- Cari penutup petak bateri di bahagian belakang peranti.
- Buka penutup dengan menggelongsor atau membuka skrunya.
- Insert a new 9V battery, ensuring correct polarity (+ and -).
- Tutup penutup petak bateri dengan selamat.
When the low battery indicator appears on the LCD, replace the battery promptly to ensure accurate measurements.

Gambar 3: Cthample of a low battery indicator on the display.
5. Arahan Operasi
5.1 Hidupkan/Mati Kuasa
Tekan merah Butang Tukar untuk menghidupkan atau mematikan peranti.
5.2 Basic Light Measurement
- Turn on the light meter.
- Ensure the light detector is clean and free from obstructions.
- Point the light detector towards the light source or area where you want to measure illuminance. The sensor can be rotated up to 270° left and 90° right for optimal positioning.
- The current illuminance value will be displayed on the LCD screen in Lux or FC units.

Figure 4: Measuring light with the rotatable sensor.
5.3 Unit Selection (Lux/FC, °C/°F)
Tekan ke MODE button to toggle between Lux and FC units for light measurement. Long press the MODE butang untuk bertukar antara Celsius (°C) dan Fahrenheit (°F) untuk paparan suhu.
5.4 Pegangan Data
Tekan ke TAHAN key briefly to freeze the current reading on the display. Press it again to release the hold function and resume live measurement.
5.5 Max/Min Data Hold
Tekan ke MAX/MIN key to cycle through the maximum, minimum, and current readings. The display will indicate 'MAX' or 'MIN' when these values are shown.
5.6 Penyimpanan Data (REC)
Tekan pendek REC button to record the current data. Long press the REC butang, kemudian gunakan REL/UP kunci kepada view data yang disimpan.

Figure 5: Data storage function indicated on the display.
5.7 Auto/Manual Ranging
The device typically operates in auto-ranging mode. To switch to manual ranging, long press the HOLD/RANGE key. Press again to select different ranges. Long press again to return to auto-ranging.
5.8 Relative Value Measurement
Tekan ke REL/UP key to enter relative value mode. The meter will display the difference between the current measurement and a set reference value.
6. Penyelenggaraan
- Pembersihan: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents. Ensure the light detector is kept clean for accurate readings.
- Storan: When not in use for extended periods, remove the battery to prevent leakage. Store the device in a cool, dry place, away from direct sunlight and extreme temperatures.
- Perlindungan Sensor: Keep the protective cap on the light sensor when not in use to prevent damage and dust accumulation.
7. Penyelesaian masalah
- Peranti tidak dihidupkan: Periksa sama ada bateri dipasang dengan betul dan mempunyai cas yang mencukupi. Gantikan bateri jika perlu.
- Bacaan tidak tepat: Ensure the light detector is clean and unobstructed. Verify that the correct measurement unit (Lux/FC) is selected. Check for strong electromagnetic interference nearby.
- Display shows 'OL' (Over-range): The measured light intensity exceeds the current range. If in manual ranging mode, switch to a higher range. If in auto-ranging, the light intensity is beyond the device's maximum capacity.
- Paparan malap atau berkelip: Bateri mungkin lemah. Gantikan bateri.
8. Spesifikasi
| Ciri | Spesifikasi |
|---|---|
| Julat Pengukuran | 0.1 to 400,000 Lux / 0.01 to 40,000 FC |
| Accuracy (<10,000 Lux/1,000 FC) | ±4%rdg + 1.0%f.s |
| Accuracy (>10,000 Lux/1,000 FC) | ±5%rdg + 1.5%f.s |
| Resolusi | 0.1 Lux / 0.01 FC |
| Kelajuan Pengukuran | 2 kali / saat |
| Saiz Skrin LCD | 28.6mm × 51.3mm |
| Sensor Rotation | 270° kiri, 90° kanan |
| Bekalan Kuasa | Bateri 1 x 9V |
| Dimensi Produk | 21 x 7 x 4 cm |
| Berat badan | Approx. 0.3 kg (including battery) |

Figure 6: Product dimensions and recommended illumination levels.
9. Waranti dan Sokongan
The AOPUTTRIVER AP-8801B Digital Light Meter is covered by a two-year product warranty from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use.
For any concerns, problems, or technical support, please contact AOPUTTRIVER customer service. Please refer to the contact information provided with your purchase or visit the official AOPUTTRIVER webtapak untuk mendapatkan bantuan.