HOME - Low pitch fire alarm for deep sleepers and high frequency loss 
Low Frequency Smoke Alarms    
For Hearing Impaired
 Hear it now.


Dear Abby calls for better smoke alarm.


The Darrow Company -
Offering low frequency devices since 2002.


Typical smoke alarms are too high pitched to be effective for waking many populations. They are around 3,000Hz. Our smoke detectors generate 520 Hz, 250 Hz, and 135 Hz respectively.
"Independent studies evaluated the performance of six different signals for waking up hard of hearing people from deep sleep and found the 520 Hz square wave to be the most effective of all the signals." See article.

The Loudenlow generates a more effective alarm sound.


Welcome.   See our "Pricing and Ordering" page for the most current models of the Loudenlow low frequency smoke detector for hearing impaired.   Remember, it's not enough to be able to hear a smoke alarm, you must be awakened by it.   Be sure to have someone test your smoke alarms at a distance to ensure the sound can wake you.   The Loudenlow Low Frequency smoke alarms have been shown significantly more effective at waking individuals with mild to moderate hearing loss.

More photos...   Many with mild or moderate hearing loss will not wake to typical smoke alarms.   The Loudenlow™ Alarm is superior at waking people during a fire because of its power and low frequency.

Battery powered, no wiring, extremely powerful audio alert.
~ Simple wall mount, no house wiring.
~ Uses standard AA batteries.
~ No FM transmitters needed.
~ User friendly, ready "out of box".
~ Free audio sample available.


"The alarm works great. My son is HOH and in his first apartment at college and the alarm really sets my mind at ease. He tends to sleep with covers over his head so I had reservations about the strobe lights. Thanks so much for making this available."
-- Kaari S.

The Loudenlow™ is a louder, low frequency smoke detector which is easier to hear.

USES ONBOARD, 6-INCH SPEAKER







ORDER HERE



OUR SMOKE ALARMS:
Frequency Friendly
About 250Hz - around "Middle C".   Easier to hear than store-bought alarms.  Listen now
Powerful
Considerably louder than regular alarms.   Uses 6 inch speaker.
Easy To Install
Mounts to any wall with one screw.
No Wiring
    Fully battery powered.   6 "AA"s generate over 1,000 milliamps
Reasonably priced
Less than many comparable products.   See the order page for current specials.
Easy to order
Order online or via mail by check, money order or credit card.

30 day return policy.
3 year limited warranty.


NEW PRODUCT ADDED: The Loudenlow Model 520™.   The most recent studies have called for a smoke alarm frequency of 520 Hz designed especially for hearing impaired people.   Our newest model, the 520, provides the recommended frequency.   It is higher pitched than our Loudenlow Original.   The studies show that 520 is the superior frequency.   We still offer the Loudenlow Original (near Middle C) because most prefer its lower sound.
See the Model 520 here.





THE DARROW COMPANY   9310 W 85 ST   OVERLAND PARK KS 66212


Smoke detectors for the Hearing Impaired.   Made in the U.S.A.