I noticed the siren stopped working yesterday. I tried playing a sound manually through the hubitat with no luck. I checked the power supply and is indeed working (tested with voltmeter). I even unplug it and the tamper alarm didn't go on as usual when I moved it around. I tried testing the back button, resetting it but is completely dead. Here are the logs from hubitat:
Try performing a hard power cycle on your Siren 6 by performing these steps:
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Remove power from the Siren 6
Wait 6 hours for the battery to completely drain out (overnight works)
Power up your Siren 6 and see if your Siren 6 comes back into operation.
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If it does freeze up often, i would recommend firmware updating it to optimize the coding used in the Siren 6 which should resolve the freeze issue if you encounter it often