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Sonic Alert Sonic Boom SBT425ss Vibrating Alarm Clock with Telephone Signaler


Availability: In stock



Quick Overview

The SBT425ss is a cost-effective alarm clock that provides great value. Wake up on time with the alarm and know when someone's calling with the built-in telephone signaler. The loud and vibrating alarm features are ideal for deep sleepers, Deaf or hard of hearing users, seniors or students.
  • 2-in-1 alarm clock and telephone signaler.
  • Wake up with the audible alarm or powerful bed shaker.
  • Built-in signaler lets you know of incoming phone calls.
  • Battery backup keeps you on schedule.

Sonic Boom SBT425ss Alarm Clock

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  • Sonic Boom SBT425ss Alarm Clock
The uniquely styled Sonic Boom SBT425ss from Sonic Alert was designed to be a cost-effective bedside alarm clock option. The SBT425ss includes two alarms for different wake-up schedules or multiple sleepers. With the built-in telephone signaling capabilities, simply connect a telephone to the clock's phone jack to be alerted when the telephone is ringing.


  • Dual alarm settings
  • Adjustable tone and volume
  • User selectable snooze time from 1-30 minutes
  • User selectable alarm duration time 1-59 minutes
  • 12/24 hour time format
  • Automatic hi/low display dimmer
  • 5 level dimmer
  • Built-in pulsating light bar above digital display
  • Battery backup (9V battery not included)
  • Alerts to alarm clock and telephone
  • Powerful 12V bed shaker with vibration strength control
  • Large 1" bright green LED display
  • Sound and vibration notification only
  • Extra loud pulsating audio alarm
  • Test mode
  • Dimensions: 5-1/2" W x 3" D x 5-1/2" H

How the SBT425SS works:

[Click for user manual]
Warranty One year warranty
Brand Sonic Alert
Product Type Alarm Clock
Alert by Audible, Vibration
Alarm Clock Style Desktop
Lamp Plugin No
Built-In Signaler Yes
Dimensions 5-1/2" W x 3" D x 5-1/2" H
Power Source A/C
Battery Backup Yes
  1. It works Review by Mike
    Overall Satisfaction

    I'm too deaf to hear it--just a faint sound--but the shaker under my pillow wakes me right up without waking my wife. Good product. (Posted on 9/26/2016)

  2. Great clock! Review by Ray the Phone Guy
    Overall Satisfaction

    Even without the phone signaling function, this is a great little clock. One warning - don't put the shaker in your pillow unless you want to get beat up when you wake up! :) If the loud shriek of the alarm doesn't get you up and going, the thunderous buzz of the shaker will, for sure. I even take it on trips when getting up at a specific time is needed. I've used mine for over 5 years now. My wife has one for her side of the bed, and we have one in the guest room as well. Early in the morning at our house, there's a whole lotta shakin' goin' on! (Posted on 10/21/2015)

  3. great equipment. ! Review by Judy B.
    Overall Satisfaction

    I'm onto my 2nd I wore the first one out. I have my alarm connected to the bed shaker, standard amplified phone and my Cap Tel phone which is based several rooms away. (Posted on 4/16/2015)

  4. works better then I expected!! Review by cheryl
    Overall Satisfaction

    The shaker is so nice to wake up to and does not startle you. I can hear sound some but rely on the shaker to wake me up. It is worth the money and customer service people great to work with. (Posted on 3/12/2015)

  5. Satisfied Review by Carol
    Overall Satisfaction

    This is the second Sonic Alert Boom that I have purchased. The first one is almost 5 years old and still working great but I felt I needed a 2nd clock to use in the guest room or to have ready in case the first clock wears out. (Posted on 3/4/2015)

  6. Great Works!! Review by Red Bird
    Overall Satisfaction

    Sonic Alert Sonic Boom Vibrating Alarm Clock - very good. Got large digital display and low or high bright by switch. Also, good for Visible green light. (Posted on 7/6/2014)

  7. Satified Review by Judy
    Overall Satisfaction

    I have my Sonic Alert Sonic Boom Vibrating alarm clock connected to the telephone and the bed shaker as well as the alarm clock. It worked really well with a regular amplified phone as I could actually feel the vibrator via the floor when the phone rang. However, when I connected my Cap-Tel telephone to my phone system the vibrations no longer are present when the phone rings. (Posted on 2/17/2014)

  8. Good Review by Deaf girl
    Overall Satisfaction

    It works great but only last 3 to 4 years. Depend on how long it takes while people taking good care of it. (Posted on 8/21/2013)

  9. Really works good!!! Review by Danny
    Overall Satisfaction

    I use my Sonic Boom with the bed shaker. I'm a pretty deep sleeper & have a severe hearing loss. This unit really does the trick of waking me up so I can get to work on time!! Worth every penny!!! (Posted on 12/27/2010)

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