Best Fully Dimmable Alarm Clocks

More on uscce Small Digital Clock for Bedroom: 6 Dimmable Brightness 4 Alarm Volume -...

• Small Digital Alarm Clock with Brightness Dimmer: Measuring 5.9*3.11*1.65 inches, this compact alarm clock fits perfectly on your bedside, desk, or nightstand. It features a large LED display with 5 adjustable brightness levels plus OFF, allowing you to customize the brightness for clear visibility or a dim setting for better sleep.
• Plug-In Clock with Batter Backup: Powered by an adapter, this electric clock includes a battery backup to save your settings during power outages. Simply insert 3 AAA batteries (not included) for memory backup, ensuring your routine stays uninterrupted. Note: Adapter is needed to keep the clock working. Batteries are for memory backup only.
• Adjustable Volume Alarm with Snooze: Offers 4 adjustable volume levels ranging from 60-90dB, perfect for both light and heavy sleepers, whether you need a loud wake-up or a gentler sound. Use the 9-minute snooze function to get a little extra rest before starting your day.
• Convenient USB Charging Port: Features a built-in USB port, perfect for charging your phone or other devices at night, ensuring your devices are ready when you wake up.
• Easy Alarm Clock with Manual DST: Simple Operation includes a 12/24-hour time format switch and manual DST adjustment for year-round accuracy, making it easy to set up for all ages, including seniors and kids.
• Ideal for Home Decor and Gift: The minimalist design retains the benefits of a digital alarm clock: easy to set, accurate, and reliable. Importantly, its compact size and space-saving, make it perfect for decorating your room as a desk clock. It’s also an ideal gift for families, seniors, kids or friends.

More on uscce Wooden Digital Alarm Clocks for Bedrooms: Dimmable Dual Alarm Clock...

• EASY-TO-READ WOODEN DIGITAL CLOCK WITH LARGE NUMBERS: Featuring 1.8-inch big bold numbers, this desk clock is easy to read from across the room, even without glasses. Designed for simple set-up, it's ideal for kids, teens, adults, and seniors. (Note: The display stays lit only when plugged in)
• 0-100% CUSTOMIZABLE BRIGHTNESS: The full-range dimmer allows you to fine-tune the brightness for any environment, not too bright and not too dim, perfect for your need for light. Compared to the fixed-level dimmer button, this smooth dimmer dial is ideal for light-sensitive users and elderly.
• DUAL ALARMS WITH 5 ADJUSTABLE VOLUME LEVELS & EASY SNOOZE: Set two separate alarms with 5 volume levels to choose from, perfect for different routines. The alarm volume can be adjusted between 45-105 dB, making it suitable for both heavy and light sleepers. The easy-access snooze provides an additional 9 minutes of rest.
• PLUG-IN ELECTRIC CLOCK WITH USB PORT: Powered by an included adapter, this clock ensures dependable timekeeping with a built-in USB port for convenient device charging on your nightstand, keeping your phone or other devices ready while you sleep.
• BATTERY BACKUP FOR POWER OUTAGES: Insert 3 AAA batteries (not included) to keep the alarm working during power outages, ensuring your schedule stays intact and preventing you from missing an alarm. It also maintains the time settings to avoid the hassle of resetting.
• USER-FRIENDLY CLOCK WITH MANUAL DST: Featuring clear, easy-to-use buttons, this clock is perfect for all ages–kids, adults, and seniors. Easily switch between 12/24-hour formats and use the manual DST function for seasonal changes, keeping you on schedule all year round.
• DESK CLOCK FOR HOME DÉCOR: With its natural and minimalist design, this wooden clock is a perfect decoration for bedrooms and offices. It's also ideal for placement on the TV stand in the living room, replacing the time display on the cable box. It makes a nice gift for family and friends.

More on DreamSky Alarm Clocks for Bedrooms, Auto Set Digital Desk Clock for Bedside...

• Auto setting alarm clock with full range dimmer: 4.3 Inches large LCD screen displays eye easy catch blue digit, time and content are easy to read at a glance. 0%-100% adjustable dimmer enable you to set the brightness of display to a comfortable level at will.
• Advance autoset time: The clock will sets itself to the correct time once plug in, hassle free to set time. Cell button battery included as backup battery, which will store the time, date and alarm setting during main power outage, however it will not support the time display nor trigger the alarm.
• Self setting clock with auto DST and selectable time zone: Automatically adjusts to Daylight Savings Time while set the DST on. Four USA time zone selectable per your location (EST/ CST/ MST/ PST).
• Ascending soft beeping alarm with snooze: Ascending alarm sound wake you up naturally. Additional snooze to counter oversleeping, simply press the snooze button once and go back to sleep. 8 minutes later the alarm will ring again.
• Plug in clock with USB ports: one USB port connect the DC adapter (included) power on the clock. Let the other port charging your smart device like cellphone, tablet and mp3 players etc. Convenient and organized.

More on Fansbe Tech Vibrating Alarm Clocks, Dimmable Digital Alarm Clocks Wireless...

The alarm clock is not just a timepiece but also a versatile charging solution. With its built-in QI wireless charging pad and a 5W USB port, you can conveniently charge two devices simultaneously. Whether it's your smartphone, smartwatch, or other Qi-enabled devices, our alarm clock has you covered. Designed for deep sleepers, the alarm clock features two high-fidelity 5W stereo speakers that deliver loud and clear alarm sounds. It also doubles as a wireless speaker with Bluetooth 5.0 technology.

More on Sawvnm LED Alarm Clock, Snooze, Dimmable, Temperature and Date

Sawvnm Smart Digital Alarm Clocks For Bedrooms, LED Screen, Snooze, Dimmable, Temperature, Date, 12/24Hr, Small Electronic Desk Clock For Kitchen Office on Clearance

More on Peakeep Large Display Digital Alarm Clock for Bedrooms, Date Day of Week Temp...

• 𝐀𝐥𝐚𝐫𝐦 𝐂𝐥𝐨𝐜𝐤 𝐟𝐨𝐫 𝐁𝐞𝐝𝐫𝐨𝐨𝐦 𝐋𝐢𝐯𝐢𝐧𝐠 𝐑𝐨𝐨𝐦: [Peakeep] gathers all features you rely on a clock for your bedroom living room desk table and office, such as modern sleek design, large visible numbers, dimmers, super loud for heavy sleepers, calendar, USB port, and even a backup battery alarm in case of power outages.
• 𝐃𝐢𝐠𝐢𝐭𝐚𝐥 𝐂𝐥𝐨𝐜𝐤 𝐋𝐚𝐫𝐠𝐞 𝐃𝐢𝐬𝐩𝐥𝐚𝐲: Peakeep digital clock provides valuable information of date, day of week, temperature at a glance. You can easily keep track of your schedule without reaching phone or calendar. The temperature display allows you to quickly assess the weather conditions before starting your day.
• 𝐋𝐨𝐮𝐝 𝐀𝐥𝐚𝐫𝐦 𝐂𝐥𝐨𝐜𝐤 𝐟𝐨𝐫 𝐇𝐞𝐚𝐯𝐲 𝐒𝐥𝐞𝐞𝐩𝐞𝐫𝐬: 5 settings of volume control for the alarm enable the clock to be super loud for heavy sleepers or those who have trouble waking up. It also allows you to set the alarm to a lower volume to help protect your hearing while still waking you up. 9-min snooze can be helpful if you like to catch a few extra minutes of sleep in the morning.
• 𝐋𝐚𝐫𝐠𝐞 𝐍𝐮𝐦𝐛𝐞𝐫𝐬 𝐰𝐢𝐭𝐡 𝐀𝐝𝐣𝐮𝐬𝐭𝐚𝐛𝐥𝐞 𝐁𝐫𝐢𝐠𝐡𝐭𝐧𝐞𝐬𝐬: 2-inch height of large numbers are friendly for seniors / elderly and people with poor eyesight. 5 different brightness settings ensure clock time is always visible in various lighting conditions: brighter and comfort in day or lower brightness at night for an improved sleep or completely off at night.
• 𝐃𝐢𝐠𝐢𝐭𝐚𝐥 𝐀𝐥𝐚𝐫𝐦 𝐂𝐥𝐨𝐜𝐤 𝐰𝐢𝐭𝐡 𝐀𝐮𝐭𝐨 𝐃𝐒𝐓：Imagine never having to manually adjust your clock for Daylight Saving Time again. With auto DST, your digital alarm clock seamlessly transitions between standard and Daylight Savings Time, ensuring you're always in sync with the official time change.
• 𝐄𝐥𝐞𝐜𝐭𝐫𝐢𝐜 𝐀𝐥𝐚𝐫𝐦 𝐂𝐥𝐨𝐜𝐤 𝐰𝐢𝐭𝐡 𝐁𝐚𝐭𝐭𝐞𝐫𝐲 𝐁𝐚𝐜𝐤𝐮𝐩: With an applicable type C adapter (included), this digital LED clock is able to run smoothly and accurately. 4 AAA batteries (not provided) can backup and memorize clock settings and trigger the alarm, this way you won’t oversleep or worry about resetting the time when power outages.
• 𝐀𝐥𝐚𝐫𝐦 𝐂𝐥𝐨𝐜𝐤 𝐰𝐢𝐭𝐡 𝐔𝐒𝐁 𝐏𝐨𝐫𝐭: 1 USB charger port on back can charge your phone while you sleep, ensuring you start your day prepared with fully charged phone, and also save valuable outlet space.

More on DreamSky Wooden Digital Alarm Clocks for Bedrooms - Electric Desk Clock with...

• Basic Wooden Alarm Clock with Easy to See Big Numbers: the 1.8 inches large numbers on this 6.6 inches compact alarm clock are super easy to read from across the room, no complex setting, easy to program, which is an ideal desk clock for kids, seniors, the elderlys and adults.
• 5 Level Dimmable Brightness Dimmer: the display brightness of this digital clock is 5 level adjustable plus an OFF option, which is vision friendly, no glaring light at night yet still bright enough by day. Time format is standard time and military time (12/24HR) switchable.
• Battery Only Operates Alarm for Power Failure: the battery function for this bedroom alarm clock will trigger the alarm during power outage, take no risk of missing your vital schedule. The display won't light up with battery power only. Requires 2 AAA Alkaline batteries (not included).
• Adjustable Alarm Volume with Snooze Button on the Top: the alarm volume is 5 level customizable from very low for light sleepers to extra loud for heavy sleepers adults. Alarm lasts for 2 minutes and a dedicated Snooze button on the top helps you get extra 9 mintues sleep easily.
• Plug in Alarm Clock with USB Charger: the bedside clock runs on electricity for normal time display and the AC adapter is supplied. A handy USB Charging Port helps you charge your smart devices and other gadgets without looking for your adapter and other outlet.
• Bedroom Accessories Wood Décoration: the concise and clean LED digits on the sleek wooden face make up this minimalist wooden digital clocks for living room décor which is also perfect for your TV stand and cable box while serves as a decent and beautiful gifts for your loved one.
• Simple Alarm Clock with Manual DST: the table clock comes with a manual DST button that would save your time when spring or fall time arrives, no setting hassle, just press the DST button, DST shows up on the display, time goes on hour forward, DST off, time goes one hour back.
• IMPORTANT: please note that the electric alarm clock is NOT battery powered and requires adapter for normal performance. Battery only operates alarm during power outage.

More on REACHER Small LED Digital Alarm Clock with Simple Operation, Full Range...

• Small alarm clock (5.6 x 1.9 x 2.9 in) with an extra USB port enables you to charge your phone giving more space for anything else you'd have on your small beside table.
• Easy Time & Alarm Setting, even no need instructions.
• Easy Snooze: Press anywhere of the clock top.
• Get your comfortable brightness of the digits with 0-100% dimmer slider; and wake up to adjustable alarm volume from 30-85db.
• Reacher 4" red digits alarm clock backs 45-day money back, 18-month warranty, and friendly customer service.

More on DreamSky Large Digital Alarm Clock Big Numbers for Seniors & Visually...

• Large Display Electric Clock with Brightness Dimmer: Streamline design and clear large bold number display. 3 inches jumbo illuminated LED digits ensure an easy to see crystal clear time even from afar, ideal for impaired vision people. The easy wheel dimmer allows you to set the display brightness from 0-100 level. No need to worry about the brightness, either too bright thus affecting your sleep or too dim to read time.
• Adjustable Alarm Sound: Single alarm setting with 9 minutes snooze. No harm beep alarm sound can be set from 30-90 DP as personal preference . Needless to worry the alarm sound, either too loud thus frightening you or too low to wake you up from deep sleeping. One simple ON/OFF button allows you disable the alarm on weekend.
• USB Charging Port: Convenient USB port allows you to charge your smartphone or other smart device without plug in wall. handy, convenient and organized.
• Easy Operation Clock: Intuitive setting button, experience zero stress when setting the time or alarm. Easy for kids, seniors and the elderly.
• Outlet Powered with Battery Backup: Plug in to power the clock with the included DC adapter. 2 x AAA batteries (not included) needed for storing time and alarm settings in case of power outage. With backup battery power only, the screen will go blank and alarm will not sound.

More on XINSDOAKK Alarm clock - Large Digital Alarm Clock Big Numbers for Seniors &...

Battery: 3*AAA battery (not included) Parts List: 1*Alarm clock Color as shown (Due to the different monitors, there will be some color differences.) alarm clock digital clock clock alarm clocks for bedrooms clock for bedroom alarm clocks digital alarm clock loud alarm clock digital clock large display led clock

More on Popular Picks, Wireless Charger Alarm Clock, 15W Dimmable Display, LED,...

Popular Picks, Wireless Charger Alarm Clock, 15W Dimmable Display, LED, 12-24H, Temp F-C, Night Light, Large Screen, for Home/Office, Easy to Use, Energy Efficient Bestselling | Plastic, As Show WIRELESS CHARGING: This product is a wireless mobile phone charger alarm clock, with wireless charging stand, put the mobile phone the mobile phone charging stand, you can start wireless charging, this is the wireless fast charging stand, the maximum output power is 15W To get fast charging, you need to use DC5V 3A or DC9V 2A or DC12V 1.5A opower adapter. Chargers below this power will cause slow charging, but will not produce clock display flicker. ALARM CLOCK FUNCTION: Alarm clock is 12/24 hours. setting the alarm clock, there is a snooze function. When the alarm sounds, just click the snooze light button flashing the screen, and you can get an extra 5 minutes of, at most Can be set 3 times. The clock is completely silent and has no ticking sound when the clock is running, and has a function the power is turned off, and there is no need to the the power is turned . ALARM CLOCK FUNCTION: Alarm clock is 12/24 hours. setting the alarm clock, there is a snooze function. When the alarm sounds, just click the snooze light button flashing the screen, and you can get an extra 5 minutes of, at most Can be set 3 times. The clock is completely silent and has no ticking sound when the clock is running, and has a function the power is turned off, and there is no need to the the power is turned . Indoor Temperature(F/C) -------The temperature is a great addition to the piece,features with accurate wireless sensor measuring the current indoor temperature,displayed in degrees or degrees Celsius easy-read large LED screen. FASHION DESIGN: This electronic digital alarm clock is easy to operate and easy to use, suitable for placing bedside tables, desks and work desks at home, it is an ideal wireless charging alarm clock for decorating your home office space, also suitable for teenagers to use in the bedroom, or as a Gifts for children, family and . (Gift box packaging, the package contains product host X1, USB-A to TYPE-C charging cable X1, manual X1) Specification: Input: 5v-2a 9v-1.67a Output power: 15W Charging efficiency: 73% Transmission distance: 3-10mm Material: plastic Product weight: 316g (including packaging) Package size: 216 * 114 * 37mm Function description: 1.First, turn the power supply (DC5V)), scan and display 1 to 9, display PM, Al and temp points, and then display and temperature 1. Press key (in the bottom hole) for more than 2 seconds with a metal needle with a diameter less than 1.4mm, and clock = 1 / 1 / 00:00 2. Set mode: (when displaying, operate as follows) 2.1 long press M: enter 12 / 24 hour setting, short press ▽ / △ to, and then short press m to set hour, minute and. 2.2 when entering the above setting mode: Short press ▽: add hour, add minute, 12 / 24-hour system ; Short press △: reduce hours and minutes, and between 12 / 24 hours; 2.3 when displaying, press △: the temperature display C (Celsius) / F ( for switching. 3. Date setting When displaying the, press m for a short to display the date. At this, press m for a long to enter the setting year, setting month and setting day in turn. Then, press m for a short to set three alarms; When entering the above setting mode, press ▽ for a short to set the year, month and day, and alarm (the alarm clock will light up) / off. When alarm is displayed, press m for a long to enter the setting of alarm, △ / ▽ to change the alarm. 4. DP mode setting mode: When the is displayed, press ▽ briefly to enter the DP setting, Short press ▽ to change 3 DP modes, Press m to the DP setting. DP = 1: display 10s, 2S date, alternate switching;DP = 2: display, not date;DP = 3: keep the current display. 5. Display brightness setting mode: During the display, briefly press △ to enter the display brightness setting, Briefly press △ to change 5 display brightnessmodes, Press m to the display brightness setting.The display brightness is as follows:0: display brightness according to time; 1-4: the fourth brightness increases in turn; 5: Screen off mode 5S. In the setting mode, the no key 30s returns to the display Packet included: 1 x host 1 x USB-A to TYPE-C charging cable 1 x manual

More on Alarm Clock Speaker Wireless Charger, Digital Alarm Clocks Bedrooms...

[Make Your Alarm Clock Blend Seamlessly into Your Daily Routine] This alarm clock for bedrooms quickly syncs with your life. Once connected via Bluetooth, it intelligently syncs with the time of your Bluetooth device, providing you with a faster time setup. With a one-touch switch between the 12/24-hour format, it quickly adapts to your preferred mode. Featuring six adjustable screen brightness levels, from complete darkness to the brightest state, it caters to your diverse needs [Start Your Morning with Ease] This digital alarm clock for bedrooms offers dual alarm functionality, allowing you to effortlessly set and control two alarms independently. The dedicated large snooze button enables you to activate a 9-minute snooze even in a half-asleep state, ensuring you wake up on time after a little extra rest. Additionally, the alarm clock is equipped with six commonly used ringtone options for you to choose your favorite wake-up sound [Multifunctional Audio Bluetooth Alarm Clock ] Beyond meeting your alarm clock needs, it can also function as computer speakers. Connect via Bluetooth 5.0, AUX, or USB to play music. The two built-in 5W high-quality speakers make the ringtone clearer and provide immersive surround sound during music playback. Also, the high-quality speakers make the alarm clock ringing clear and pleasant, allowing you to wake up to comfortable music [Multicolored Night Light Function] This bedside alarm clock has an RGB light strip that can switch between multiple light modes. Three gentle night light modes are suitable for nighttime illumination, reading, and aiding sleep. Three RGB dynamic light modes synchronize with music, dual-color changes, and breathing lights, injecting different colors into your moments of relaxation. Alarm clock with lights are more in line with modern living habits and bring people a warmer living environment [Convenient Charging Design] This bedside alarm clock for bedrooms supports both wireless and wired charging. Wireless charging frees you from cumbersome data cables and sockets, allowing you to wake up to a fully charged phone. The alarm clock with usb ports provides more charging possibilities for devices that do not support wireless charging. Whether it's your smartphone, smartwatch, or other Qi-enabled devices, our alarm clock with wireless charging has you covered [Enjoy the humanized Alarm Sound and Wake-Up Light Design] Our alarm clock features a thoughtful design with both sound and light to gently wake you. The alarm tone gradually increases in volume while the wake-up light softly brightens, filling the room with a gentle glow. This ensures a peaceful transition from sleep, avoiding any sudden jarring sounds. When the snooze function is activated, the wake-up light gradually dims, allowing you to rest a little longer in comfort [Exquisite Gift Box Packaging] Color: Gray, Model: A21-B. Our Bluetooth alarm clock with wireless charging is packaged in a beautiful box, you can give it as a gift to your relatives and friends. You'll get: 1 * bedside alarm clock for bedrooms, 1 * power adapter, 1 * AUX audio cable, 1 * user manual, and 1 * quick guide. If you have any questions, please feel free to contact us and we will reply within 24 hours

More on shyuyusa Digital Alarm Clock Simples LED Large Digital Display Fashion...

Digital Alarm Clock Simples LED Large Digital Display Fashion Alarm Clock Fully Functional Desktop Bedside Study Kitchen Clock Black Frame Specification: Product Name: LED Clock Product colour: Orange Package size:18x7.4x3cm/7.0x2.9x1.2inch Product size:17.3x6.7x2.3cm/6.7x2.6x0.9inch Gross Weight:148g/0.32lbs Features: Hd LED alarm clock: Simples shape, prefer minimalist lines, yearning for pure quality, eliminatesartificial appearances. button design, easy and quick. Voice-activated wake-up function, voice-activated wake-up in battery mode. Five criterion brightness adjustment Night mode: 22:00-6:00 brightness automatically enters the low brightness mode . Two display modes: display time one; Time,date, temperature cycle display. Multi-function alarm clock: five criterion of brightness adjustment, two display modes, snooze function, voice activated wake up, night mode, two sets of alarm clock. Package Include: 1x Clock 1x Charging line 1x Specification

More on Tanxxt Clearance Large Digital Alarm Clock Big Numbers for Seniors & Visually...

Creative Curved Electronic Clock Large LED Clock Silent Alarm Clock Features: Innovative Design, Unique Appeal: The creative curved electronic clock features a modern, stylish curved design. It is not just a time display tool but also an artwork that can bring a distinct charm to any home or workplace environment. Large Screen LED Display: The large screen LED display ensures that the time is clear and easy to read, whether it's day or night. It provides bright display effects even in dim lighting conditions. Reflective Feature, Practical and Aesthetic: The clock's face is designed as a reflective panel, which can be used as a makeup glass or decorative glass when not in use. It combines practicality with aesthetics, adding convenience to your life. Silent Operation, No Noise: Equipped with a silent movement design, the clock does not produce ticking sounds whether it's day or night. It ensures a quiet environment, allowing you and your family to have a better rest and work experience. Multi-functional Alarm Clock: In addition to displaying the hour, it also has an alarm clock function. You can set multiple alarm alerts to meet different needs. Whether it's waking up, reminders, or scheduled tasks, it helps you manage your time accurately and makes your life more organized. Product Description: Creative Curved Electronic Clock Large LED Clock silent alarm clock Material: Plastic Color: as the picture shows, (Due to the difference between different monitors, the picture may have slight color difference. please make sure you do not mind before ordering, Thank you!) Package weight: 215g Package size: 17.6x6.1x8.4cm,(Please allow 1-3mm error due to manual measurement. please make sure you do not mind before ordering.) This product does not come with batteries

More on Hansang Sunrise Alarm Clock, Wake up Light Alarm Clock, 3 Ways Dimmable...

The Hansang Sunrise Wake-Up Lamp simulates a sunrise to gently wake you up in a natural environment. The touch-sensitive lamp can be easily turned off at the set time, allowing your child to fall asleep gradually with the simulated sunset, eliminating their fear of darkness. With 7 wake-up options to choose from including buzzing, bird songs, steam, rain, sea waves, sound-only, and light-only, there is always a perfect one for you. The lamp also offers 3 adjustable brightness levels and 6 colors to create a soothing atmosphere for various activities such as soothing, feeding, and more. Specifications: · LED colors: Warm white, red, blue, green, purple, yellow & breathing light · Material: Toy-grade ABS+PP plastic · Item weight: 0.63 lb · Product size: Φ106*151mm · Adapter input: 100-240V~50/60Hz 0.2A · Adapter output: 5V 1A · Lamp input: DC5V 1A · Lamp power: Max 3W Package Includes: · 1 x Sunrise Alarm Clock · 1 x Power Cable · 1 x User Manual

More on DreamSky Large Digital Alarm Clock for Visually Impaired - 8.9 Inches Big...

DreamSky Large Digital Alarm Clock for Visually Impaired - 8.9 Inches Big Electric Clock for Bedroom Jumbo Number Display Fully Dimmable Brightness Dimmer USB Ports 12/24H Adjustable Alarm Volume

More on Sharp LED Digital Alarm Clock Swivel Base Outlet Powered Simple Operation...

EXTREMELY SIMPLE TO OPERATE - The cool clock has been designed with absolute simplicity in mind! Easy for boys, girls, toddler, kids, teens, seniors and the elderly. LOUD ALARM AND SNOOZE - The bedside alarm clock comes with one of the loudest alarms available which can be set at Low or High in volume. There is also a 9 minute snooze that can be continually pressed until the alarm itself is switched off JUMBO ILLUMINATED LED DIGITS WITH HIGH/LOW BRIGHTNESS - The red numbers on the clock are very clear with extra bright quality, easy to see! If desired, there is a high/low option to set the brightness to your own personal comfort level. AC 120V ELECTRIC POWERED, WITH BATTERY BACK UP - To power the clock, just plug the power cord into a standard US 120V outlet (do not use with 240V) and you are good to go. Use one 9V battery for back up in case of a power outage. During battery back up the screen goes blank but alarm and time settings are retained and the alarm will still sound.