Does an alarm sound if oxygen level drops below 90 percent?
1463111
Yes, it will flash and beep if your O2 drops below 90 and if your heart rate exceeds 120 bpm. (or 125 bpm). I love this thing. If you use it too much, it does go through the batteries, so keep some AAA's handy, but it really is a great oximeter.
1967614
Yes. Sometimes the vibrations from closing another door or dropping something set off the alarm
603877
If it is moved or gets jarred it will make a loud "chirp" as a warning. I haven't had any false alarms with it. I believe if the alarm is triggered that it goes off in like 15 seconds unless the code is entered before that.
2107306
It works well for sound levels close to hazardous levels and above. There is no alarm to identify any certain level.
1879775
Apparently not. The alarm seems to activate only when the temperature is above the set point.
1395157
If by silent alarm means nothing is felt, heard, or seen when you want it to alarm then YES! :) Unfortunately, this does not have any alarm nor any type of audible or mechanical notification. It is a trade off for having a device whose battery lasts up to a year.
1879774
Alarm only sounds when rising to a temperature. Alarm does not sound when falling to a temperature.
288776
No alarm! You have to listen for the soft click of the power level snapping back into the off position.
997765
Yes, it has separate alarms for both pulse and O2. The alarm ranges are user adjustable. Also the phone vibrates.
283193
No. It does not give a warning tone. It alarms when the timer gets to zero. It has been reliable so we like it. But it is pretty simple and straight forward without any bells and whistles.
1060879
No alarm. It's basic function is to measure the oxygen saturation in the blood and a quick way to measure your pulse... Just like when you go to the doctor's office... In about 30 seconds.
1542145
It is supposed to stop. For any reason the item is in slight motion, of course the alarm will continue to sound. Also, the battery can be going dead and will continue to go-off until completely dead. Check battery for voltage capacity. Otherwise item could be defective.
297337
No, it will only silence that one alarm. If the smoke has not cleared in 4 minutes, it will sound again. It will also silence the low battery beep for 24 hours. (If your batteries happen to be low).Why are you finding alarms with missing batteries?
682506
The inverter has a low voltage alarm which will give you an audio when you drop below the acceptable input voltage
2113054
No. This device is pretty basic. It does not alarm for low oxygen saturations either. We just use it for checking my husband's oxygen levels, because he has significant lung disease, and we want to be able to correlate how he is feeling and looking with what his oxygen saturation actually is. It works well for that purpose. Devices that alarm for high pulse rates or low saturation levels start in the 350.00 plus range the last time I priced any.
239061
No alarm. Just vibrates when you are out of range, when there is a phone call and when the testing is done.
765825
You can't. I've had three (returned 2 due to this issue) and I ended up manually taking into account SpO2 readings are 1-4% low after talking to an otherwise very helpful tech rep. Manual says +/-2%, but all 3 were off 50% of the time with more than 2% on the low side, but never the high side. Pulse readings on all three were OK, though. Btw, in spite this shortcoming, I do like the product as I can use its alarm feature to wake me up when my heart rate or O2 drops too low.