LFF Atomic Clock User Manual

1. Pengenalan

The LFF Atomic Clock (Model LWC150) is a versatile digital wall or desk clock designed for accurate timekeeping and environmental monitoring. It automatically synchronizes with the WWVB radio broadcast for precise time and features a large, easy-to-read LCD display showing time, date, day of the week, alarm status, and both indoor and outdoor temperature and humidity.

Figure 1.1: LFF Atomic Clock with its wireless outdoor sensor.

2. Ciri-ciri

• Accurate Atomic Clock: Built-in receiver automatically synchronizes with the WWVB radio broadcast from NIST in Fort Collins, Colorado, ensuring precise time and calendar adjustments.
• Large LCD High-Definition Display: 9.4-inch tall display with large numbers for easy readability. Displays time (12/24H), calendar, day of the week, alarm, indoor/outdoor temperature (°C/°F), and humidity simultaneously.
• Sensor Luaran Tanpa Wayar: Transmits accurate outdoor temperature and humidity measurements up to 328 feet (100 meters). The sensor has an IPX4 splash-proof rating.
• Dikendalikan Bateri: Main clock requires 4 AA batteries (not included), and the outdoor sensor requires 2 AAA batteries (not included). No backlight display.
• Zon Masa Berbilang: Supports 8 time zones including EST, CST, MST, PST, AKT, HST, AST, NST.
• Peletakan Fleksibel: Can be used as a wall clock (3 hanging holes) or a desk clock (integrated bracket).

Gambar 2.1: Lebihview of the clock's multifunctional display and features.

3. Kandungan Pakej

Sila semak kandungan pakej semasa membuka kotak untuk memastikan semua item ada:

• 1 x LFF Atomic Clock (Main Unit)
• 1 x Penderia Luar Wayarles
• 1 x Manual Pengguna

4. Persediaan

4.1 Pemasangan Bateri

The main clock unit and the outdoor sensor are battery-powered. Batteries are not included.

1. For the Main Clock Unit: Open the battery compartment on the back of the clock. Insert 4 new AA batteries, ensuring correct polarity (+/-).
2. Untuk Sensor Luar Tanpa Wayar: Open the battery compartment on the back of the sensor. Insert 2 new AAA batteries, ensuring correct polarity (+/-).

Figure 4.1: Battery installation and button layout on the main clock unit.

4.2 Penempatan Sensor Luar

For accurate temperature and humidity readings, place the outdoor sensor in a location that is:

• Out of direct sunlight and rain.
• Away from any heat sources (e.g., vents, exhaust fans) or extreme cold sources.
• Within the wireless transmission range of 328 feet (100 meters) from the main clock unit.

Figure 4.2: Optimal placement for the wireless outdoor sensor.

4.3 Initial Atomic Time Synchronization

After battery installation, the clock will automatically attempt to synchronize with the WWVB atomic time signal. This process may take several minutes to several hours, depending on your location and signal strength. Ensure the clock is placed in an area where it can receive a clear signal, ideally near a window and away from electronic interference.

Figure 4.3: The clock synchronizes with the atomic time signal broadcast from Fort Collins, Colorado.

5. Arahan Operasi

5.1 Tetapan Masa dan Tarikh Manual

While the clock primarily relies on atomic synchronization, you can manually set the time and date if needed (e.g., during initial setup before signal acquisition or in areas with poor reception).

1. Tekan dan tahan butang SET button on the back of the clock until the display flashes.
2. Gunakan UP or DOWN/RCC butang untuk melaraskan nilai berkelip (cth., jam, minit, tahun, bulan, hari).
3. Tekan SET again to confirm the setting and move to the next value.
4. Repeat until all desired settings are configured.

5.2 Pemilihan Zon Waktu

The clock supports 8 time zones. After atomic synchronization, you may need to select your local time zone.

• Tekan ke SET button repeatedly until the time zone setting flashes.
• Gunakan UP or DOWN/RCC buttons to cycle through the available time zones (EST, CST, MST, PST, AKT, HST, AST, NST).
• Tekan SET untuk mengesahkan pilihan anda.

5.3 Pemilihan Unit Suhu (°C/°F)

To switch between Celsius and Fahrenheit for temperature display:

• Tekan sebentar DOWN/RCC button. The temperature unit will toggle between °C and °F.

5.4 Fungsi Jam Penggera

The clock includes an alarm function.

1. Tekan ke PENGGERA butang ke view masa penggera semasa.
2. Tekan dan tahan butang PENGGERA butang sehingga masa penggera berkelip.
3. Gunakan UP or DOWN/RCC butang untuk menetapkan jam dan minit penggera yang diingini.
4. Tekan PENGGERA untuk mengesahkan setiap tetapan.
5. Untuk mengaktifkan/menyahaktifkan penggera, tekan sebentar PENGGERA butang apabila masa penggera dipaparkan. Ikon penggera akan muncul/hilang pada skrin.

5.5 Paparan Maklumat

The large LCD display provides comprehensive information at a glance:

• Bahagian Atas: Current time (with AM/PM indicator), atomic signal strength, DST indicator, and time zone.
• Bahagian Tengah: Date (Month-Day-Year) and Day of the Week.
• Bahagian Bawah: Indoor temperature and humidity, and outdoor temperature and humidity (from wireless sensor).

Figure 5.1: The LFF Atomic Clock can be placed on a desk or mounted on a wall.

6. Penyelenggaraan

6.1 Penggantian Bateri

Replace batteries in both the main unit and the outdoor sensor when the display becomes dim or readings become erratic. Always replace all batteries at the same time with new ones of the same type. For temperatures below -4°F, lithium batteries are recommended for the outdoor sensor.

6.2 Pembersihan

Wipe the clock and sensor with a soft, dry cloth. Do not use abrasive cleaners or solvents, as they may damage the display or casing. Avoid getting moisture into the battery compartments or electronic components.

6.3 Penjagaan Sensor

Periodically check the outdoor sensor for any debris or obstructions that might affect its readings. Ensure it remains in a sheltered location to protect it from extreme weather conditions, despite its splash-proof design.

7. Penyelesaian masalah

8. Spesifikasi

9. Waranti dan Sokongan

LFF products are designed for reliability and performance. For any questions, technical support, or warranty claims, please contact LFF customer service through the retailer's platform or the official LFF webtapak. Sila simpan bukti pembelian anda untuk tujuan waranti.