CLXEAST 18" Illuminated Atomic Outdoor Wall Clock — Waterproof, LED Backlight & Thermometer

The CLXEAST 18" Illuminated Outdoor Atomic Wall Clock is a weatherproof, self-setting timepiece with an automatic warm backlight, built-in thermometer and hygrometer for reliable outdoor or indoor use.

This large 18-inch clock combines an atomic radio timekeeper with an intelligent LED backlight and environmental sensors, delivering accurate time and easy nighttime reading without manual adjustments. Its sealed construction and UV-resistant finish are designed to withstand porch, patio and garden use while still looking at home indoors. The clock uses a simple AA battery for the movement and D batteries for the lights, keeping power needs straightforward.

How does the atomic time feature keep the clock accurate?

The clock receives WWVB radio signals from Fort Collins to synchronize time automatically, so it reads precisely to the second and adjusts for Daylight Saving Time when enabled. You can also select your U.S. time zone so the clock aligns with local time settings. This minimizes the need for manual changes after power interruptions or seasonal shifts.

• Automatic WWVB radio sync for second-accurate time
• On/off option for atomic sync and Daylight Saving adjustments
• Four preset zone selections: PST (P), MST (M), CST (C), EST (E)
• Resets itself after temporary power loss or battery replacement

What makes the LED backlight smart and useful at night?

The integrated light sensor detects low-light conditions and activates a warm dial backlight only when needed, preserving battery life and preventing glare in daylight. Two backlight modes allow you to choose "Always On" for continuous illumination or "Always Off" if you prefer no backlight. LED power uses D batteries and is engineered to last months depending on usage and environment.

• Automatic ambient light sensor for night activation
• Two modes: Always On or Always Off for flexible use
• Warm-tone LED provides readable contrast without harsh blue light
• Separate power for movement (AA) and LEDs (D batteries) for easy maintenance

Is the clock built to handle outdoor conditions?

This model features an IP65-style sealed design with rubberized gaskets and a UV-resistant faux barnwood face to resist moisture and sun fading. While it’s protected against rain and splashing, avoid placing it under direct, continuous exposure to sun or extreme heat for prolonged life. The finish and seal make it suitable for covered patios, porches, pool areas and indoor spaces where humidity is a factor.

• Weather-sealed front and back gasket for water resistance
• UV-resistant faux barnwood finish to limit sun damage
• Recommended for covered outdoor spots: porch, patio, pool area
• Avoid direct, constant exposure to harsh elements for longevity

How do the temperature and humidity sensors perform?

Built-in sensors report temperature (from -40°F to 140°F) and relative humidity (1%–99%) so you can monitor conditions where the clock is mounted. Allow the sensors about three hours to stabilize after installation for accurate readings. These measurements are convenient for general awareness of the environment rather than laboratory-grade precision.

• Thermometer range: -40°F to 140°F for indoor/outdoor readings
• Hygrometer range: 1%–99% relative humidity
• Allow ~3 hours for sensors to calibrate after mounting
• Ideal for general monitoring of living spaces, patios and pools

Who is this for: The CLXEAST 18" Illuminated Outdoor Atomic Wall Clock suits homeowners and renters who want an easy-to-read, low-maintenance timepiece for covered outdoor areas or indoor living spaces. It appeals to people who value automatic timekeeping, simple battery operation and environmental readouts without wiring or complex setup. If you want a decorative clock that blends farmhouse or classic styling with modern convenience — accurate atomic time, smart backlighting and weather resistance — this model is designed for you.