Can I get help from an expert?

Certainly! Your safety is important. Call our technical support line at 800- 648-7923 (outside the U.S. call 405-200-1698). A member of our U.S.-based technical staff will be happy to assist you.

How long will my HLAC operate without AC power?

The HLAC will operate for a minimum of 7 days (168 accumulated hours) on battery backup, and the emergency alarm will still be able to sound at full power for at least 4 minutes. When the batteries become depleted to the point that they have only 24 hours of backup power left, you will get a low-battery alert chirp and a bed shaker activation once a minute. If you have an HLAC151 it will also say “Check batteries“.

What happens if I lose AC power?

The AC-POWER indicator light will go out. The upper left corner of the display screen will flash ERROR, and a power-plug icon will flash. If set, the wake-up alarm will alert as usual during the first 24 hours of a power outage. Normal operation will resume when AC power is restored.

My HLAC is just sitting there and flashing TEST. What does that mean?

If you have an HLAC150, the HLAC is waiting for you to initiate the set-up procedure. Press the red TEST/SILENCE button on the back to begin the procedure (see “INITIAL SET-UP”). If you have an HLAC151, it will also say “Press the red button to begin” in a baritone voice at intervals to prompt you to proceed.

My HLAC is sounding, and I don't know why?

The display screen will tell you. Look for one of these:

1. If the screen is flashing FIRE, the HLAC has heard a T-3 signal. Evacuate the house and evaluate the situation from a safe location. Never ignore any alarm.
2. If the screen is flashing BATT, you need to replace the batteries.
3. If the screen is flashing bedS, there is a problem with the bed shaker. Most likely it has come unplugged, or the plug is not completely inserted. Unplug the bed shaker and firmly plug it back in. If the HLAC continues to flash bedS, check for damage to the bed-shaker cord.
4. If the screen is flashing the time of day, the wake-up alarm is sounding.
5. If the screen is flashing all segments of the LCD display (88:88 where the time of day is normally displayed, for example), there has been a failure. This usually indicates that the HLAC did not hear a compatible T-3 signal during set-up, but it may be because a recent power outage used up the last of the battery backup before the power came back on. Unplug the HLAC, install fresh batteries if needed, and redo the set-up (see “INITIAL SET-UP”).
6. If an HLAC151 starts flashing TEST and saying “Press the red button to begin” after being in normal operation for a time, it means that it has lost all power very briefly and must be set up again. Like the HLAC150, this can happen if the back-up batteries run completely down, and then recover when the HLAC is inactive for a few seconds. Unplug it, change the batteries, plug it back in, press the red button, and follow the voice instructions to set it up.

My HLAC is flashing bedS and chirping every 5 seconds. What's wrong?

The most likely cause is that the bed shaker has come unplugged or the plug is not completely seated in the jack. Unplug the bed shaker and reseat it firmly in the jack. If that doesn’t work, check the bed-shaker cord for damage. Replacement bed shakers are available from Lifetone.

Your HLAC151 will also flash bedS and chirp every five seconds, but it will also tell you to “Check bed shaker” to help you identify the problem.

My HLAC is flashing BATT and chirping once a minute, and the bed shaker is vibrating briefly every minute. What’s wrong?

First, don’t unplug your HLAC from the wall outlet. BATT means that the batteries are missing, depleted, or incorrectly installed. When installing batteries, be sure to match the polarity markings (+ and -) shown in the battery compartment. The bottom of the battery goes toward the coiled spring. Lifetone recommends that you keep a spare set of four D-cell batteries.

Your HLAC151 will also flash BATT and chirp once a minute, but it will also say “Check Batteries” to help you identify the problem.

I have two HLACs, and they set each other off. How can I silence them both?

The most likely cause is that the bed shaker has come unplugged or the plug is not completely seated in the jack. Unplug the bed shaker and reseat it firmly in the jack. If that doesn’t work, check the bed-shaker cord for damage. Replacement bed shakers are available from Lifetone.

The HLAC is designed to hear not only the high-frequency T-3 of a typical smoke detector but also the low-frequency alarm of another HLAC. Here’s how to silence them after a false alarm or a test:

1. First, silence your smoke detector(s).
2. Second, unplug one of your HLAC units and carry it to the location of the other. Press the red TEST/SILENCE button on each. Then return the first HLAC to its usual location and plug it back in.

Why do I have to silence my smoke alarm before I silence my HLAC?

When you press the TEST/SILENCE button after a fire alert, the HLAC enters a two-minute period of enhanced sensitivity, indicated by a sine-wave icon ( ) on the display screen. If you silence the HLAC first, you will probably not be able to get to your smoke alarm and silence it before the HLAC hears it again and resumes alerting you.

My HLAC began sounding when I burned some toast. I pressed the red TEST/SILENCE button, but the HLAC started flashing FIRE again. How can I silence the HLAC?

You need to silence your smoke alarm first. The HLAC doesn’t have its own smoke detector; instead, it listens for an alarm signal from your existing smoke detector(s). If that alarm is still sounding, the HLAC will hear it and resume alerting you.