404-3846 - Wall clock LA CROSSE TECHNOLOGY - Free user manual and instructions
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| Product Type | Atomic Wall Clock |
| Brand | La Crosse Technology |
| Model Number | 404-3846 |
| Display | Analog clock face with digital sub-display for date and temperature |
| Time Synchronization | WWVB Radio-Controlled (Atomic Time) |
| Calendar | Auto-calendar with date and month |
| Indoor Temperature Range | +14°F to +122°F (-10°C to +50°C) |
| Outdoor Temperature Range | -39.9°F to +139.8°F (-39.9°C to +59.9°C) |
| Indoor Humidity Range | 1% to 99% RH |
| Outdoor Humidity Range | 1% to 99% RH |
| Wireless Sensor Range | 300 feet (91 meters) open air |
| Sensor Protocol | 915 MHz wireless transmission |
| Power Source - Clock | 2 x AA 1.5V batteries (not included) |
| Power Source - Sensor | 2 x AA 1.5V batteries (not included) |
| Battery Life | Approximately 12 months for clock and sensor |
| Outdoor Sensor Included | Yes, wireless temperature and humidity sensor |
| Dimensions (W x H x D) | 12.4 x 12.4 x 3.9 inches (31.5 x 31.5 x 10.0 cm) |
| Weight | 2.2 lbs (1.0 kg) |
| Mounting | Keyhole mount for easy wall hanging |
| Cleaning | Use a soft, damp cloth to clean the surface; do not use harsh chemicals |
| Safety | Install batteries correctly, observe polarity, and remove exhausted batteries promptly |
| Spare Parts | Replacement remote sensors and power adapters are available online |
| Reparability | User-replaceable batteries; refer to manual for troubleshooting |
Frequently Asked Questions - 404-3846 LA CROSSE TECHNOLOGY
How do I set the time manually on my La Crosse Technology 404-3846 wall clock?
To set the time manually, press and hold the SET button for over 3 seconds. The hour digits will flash. Use the +/- buttons to adjust, press SET to confirm and move to minutes. After setting, the clock will resume normal operation. The atomic time signal will override manual settings when received.
How does the atomic time synchronization work?
The clock receives the WWVB atomic time signal from Fort Collins, Colorado. When the signal is received, the time and calendar adjust automatically. It attempts to sync every hour, and a full synchronization typically occurs at night when interference is low. If the signal isn't received within 24 hours, the clock continues to operate on its quartz movement.
What batteries do I need for the clock and the remote sensor?
The clock requires 2 x AA 1.5V alkaline batteries, and the remote sensor also requires 2 x AA 1.5V alkaline batteries. Do not use rechargeable batteries, as they may not provide the correct voltage and reduce performance.
Where should I place the outdoor sensor for accurate temperature readings?
Place the outdoor sensor in a shaded, dry location out of direct sunlight and weather. Mount it under an eave or on a fence post using the included holder. Ensure it is within 300 feet (91 meters) of the clock with minimal obstructions such as walls or metal objects for reliable signal transmission.
How do I connect the outdoor sensor to the clock?
First, insert batteries into the sensor and then into the clock within 3 minutes of each other. The clock will automatically search for the sensor and display outdoor temperature/humidity. If the signal is not received, hold the SENSOR button on the clock for 3 seconds to re-search.
Why is my outdoor sensor showing dashes or not reading?
Dashes indicate the sensor signal is lost. Move the sensor closer to the clock and ensure the batteries are fresh. Press and hold the SENSOR button for 3 seconds to re-sync. Check for interference from electrical appliances or metal barriers. If the issue persists, replace the sensor batteries.
How do I change the temperature unit from Fahrenheit to Celsius?
Press and hold the °F/°C button for 3 seconds to toggle between Fahrenheit and Celsius. The selected unit will be displayed on the digital sub-display.
How do I hang the wall clock securely?
The clock has a keyhole mount on the back. Use a screw or nail suitable for your wall material. Insert the screw head into the keyhole and slide the clock down until it locks. Ensure the screw is firmly anchored to support the clock's weight (2.2 lbs).
How do I clean the wall clock without damaging it?
Use a soft, damp cloth to gently wipe the surface. Do not use abrasive cleaners, sprays, or submerge the clock in water. Avoid getting moisture into the battery compartments or openings.
What should I do if the clock does not receive the atomic time signal?
The atomic signal may take up to 24 hours to sync after battery installation. Place the clock near a window facing Boulder, Colorado (west-northwest if you are in the eastern US). Avoid metallic objects and electronic interference. If the clock still fails to sync, manual time setting is available, and the clock will continue to keep accurate time using its crystal oscillator.
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USER MANUAL 404-3846 LA CROSSE TECHNOLOGY
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Product information
Brand : LA CROSSE TECHNOLOGY
Model : 404-3846
Category : Wall clock