Sharp Atomic Digital Wall Clock 3" LCD with Wireless Outdoor Temp Sensor — WWVB Sync, Indoor/Outdoor Temps

Sharp Atomic Digital Wall Clock with a 3" LCD and included wireless outdoor sensor displays accurate time and indoor/outdoor temperatures with automatic daily synchronization to WWVB.

This compact digital wall clock combines reliable atomic timekeeping with an easy-to-read 3-inch display and a wireless outdoor sensor that relays outdoor temperature up to 100 feet away. The timepiece receives daily updates from the WWVB signal broadcast by the U.S. National Institute of Standards and Technology (NIST), so you won’t need to adjust it for drift. It also doubles as a freestanding desk clock and shows the calendar and day of the week, making it versatile for rooms, offices, workshops or covered patios.

How accurate is the clock, and how does atomic synchronization work?

The Sharp Atomic Clock contains a WWVB radio receiver that picks up the national time signal and automatically corrects the clock once each day. That synchronization keeps displayed time within one second of official U.S. government time without manual adjustments. Reception depends on location and interference, but the mechanism is automatic once the unit is positioned for signal reception.

• Daily automatic WWVB synchronization for sub-second accuracy
• No manual time-setting required under normal conditions
• Ideal for areas with clear radio reception; relocate if signal is weak

How do the indoor and outdoor temperature readings work?

The clock shows both indoor and outdoor temperatures: the main unit measures room temperature while the included wireless sensor transmits outdoor temperature readings to the clock. The sensor uses battery power and connects wirelessly up to about 100 feet, eliminating the need for wiring between devices. Place the sensor outdoors in a sheltered spot for best accuracy and avoid direct sunlight or heavy moisture exposure.

• Included wireless sensor transmits outdoor temperature up to 100 ft
• Sensor requires 2 x AAA batteries; main clock uses 3 x AA
• Displays both indoor and outdoor temperatures alongside calendar and weekday

What can I expect from the display and installation options?

The Jumbo 3-inch LCD numerals are designed for quick, at-a-glance reading from a distance, and the clock can be hung on a wall or set on a desk with its integrated stand. The control layout is simple to operate for switching modes and viewing the calendar. Being battery-powered, the clock is portable and can be mounted where outlets aren’t available.

• 3" tall LCD digits for high-visibility time reading
• Wall-mountable or freestanding with built-in desk stand
• Battery operation avoids outlet placement and keeps installation flexible

Who is this for: The Sharp Atomic Digital Wall Clock is made for anyone who wants dependable, low-maintenance timekeeping and temperature monitoring in living rooms, home offices, garages, classrooms, or covered outdoor spaces. It’s especially helpful for users who value automatic WWVB time updates, a large readable display, and a wireless outdoor sensor without the hassle of wiring.