For the past few weeks we have had a random loud beep maybe about a second in duration going off in our upstairs hallway. It is very random and in the middle of the night or early morning. It appears to come from around my children’s rooms where we have a PowerG CO detector, and a PowerG smoke/heat detector. I recently replaced the batteries in these sensors and thought that maybe fixed the issue. This morning at about 6:20- 6:30 AM we had another single one second beep that woke my children up. I checked the detectors and the lights are all green. Additionally the alarm tone only happened a single time and never repeated. Some times it is a series of 3-4 long beeps and then nothing. Both devices still have about 2 years until they need replacing.
Any ideas as to what this could be?
I am assuming it is an issue with one of these given that there are no other noise emitters here except our non-alarm.com connected wired smoke detectors, which set off all others if one goes off. None of those show as latched or have anything but green leds on them. We are obviously struggling with this as I have young scared crying kids coming into my room whenever this random alert happens.
Note: Later today I am going to put my system in test and clean out both the CO sensor as well as the smoke/heat detector. I have heard that dust and sometimes bugs in the detection chambers can cause this issue.
For the past few weeks we have had a random loud beep maybe about a second in duration going off in our upstairs hallway. It is very random and in the middle of the night or early morning.
Is this always in the overnight/ early morning period? Do you recall when this first began?
Is this sound ever the temporal 4 alarm sound, or something different?
This morning at about 6:20- 6:30 AM we had another single one second beep that woke my children up. I checked the detectors and the lights are all green.
Not showing anything in history around that time aside from automation triggers. Nothing from any life safety sensors.
The PG9936 will do 2 loud alarm beeps with red LED flashes when Testing the sensor. This is done by holding the Test button down on the unit for 2 seconds.
Otherwise, The PG9936 smoke doesn’t have any documentation regarding long beeps. It does chirp briefly once every 48 seconds for a variety of onboard issues including Low Battery, Dirty Sensor, and Detector Trouble. These would all be accompanied by a a flashing Yellow LED.
Similarly, the PG9933 carbon has temporal alarm and a couple short beeps when testing which requires the test button to be held.
Much like the smoke, there are a some chirps with Yellow LEDs that signify a variety of onboard issues.
None of the documented chirps seem to match what you are describing.
It happened again this morning a little before 9AM EDT. It was about a 1 second beep, the same beep that would repeat over and over for an actual alarm. I put the system into test and used a duster to blow out the chambers in both the smoke and the CO sensors. Since then, I have not heard a repeat, though I would expect it in earlier hours based on when it happened. For good measure I also replaced the batteries in the smoke again, since they had been replaced with old stock. I can say that before any of the cleaning and replacing we did not have any amber or red lights.
As far as my inter-connected smokes, those are mostly First Alert Model: SC9120B. Those were manufactured Nov 16, 2018. There are no red or amber lights on those, none of them are latched from a previous alarm.
You may need to isolate one of the devices to determine if it is the cause. I would refrain from Removing the sensor from the base to do this, as this will cause a tamper, which will alert until it has been resolved.
Does anything show at the panel, in the Alerts/Alarms section of panel programming? Click on the Surety logo located on the top right hand corner of the screen, then select Alerts and Alarms. Any onboard alerts regarding those devices, at the times specified?
i t happened again this morning a little before 9AM EDT
Nothing in history related to either device, outside from tampers around 930 AM. Did you take them down around that time?
Typically if the batteries are low, you’ll get a message through the system, in addition to the chirp/flash combo on the unit itself.
As far as my inter-connected smokes, those are mostly First Alert Model: SC9120B.
Based on documentation those chirp for low battery and beep 3 times, pause, beep 3 times for alarms and during testing.
If needed, you can remove one of the PowerG life safeties from panel programming to avoid potential alarm issues until you are able to identify.
If the panel is showing normal and no trouble history, it may be either your First Alert smoke detectors or another device nearby
I would double check the pigtail on the smoke near the area where you are hearing the smoke. If the pigtail is not connected to the smoke correctly, it can cause the smoke detector to chirp.
I would also make sure you don’t have any other battery powered CO detectors.