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Forum Discussion
donjajo
Dec 18, 2025Aspirant
WAX204 cannot run on UPS
I have a WAX204 which I need to plug into a UPS. It runs okay if the UPS is plugged into AC power. However, whenever the power goes out, the router reboots and gets stuck in a boot loop. The loop hap...
StephenB
Dec 19, 2025Guru - Experienced User
donjajo wrote:I had thought it was the UPS power
It must be, but probably not the amount of power. More likely the quality of the power.
Possibly this is because the output of the UPS is PWM (pulse width modulation), which gives a stepped sine wave, and not a true sine wave. But this is just speculation. FWIW, HikVision does make on-line UPS that provide true sine wave output.
Are you using the original power adapter for the AP? Possibly a different adapter would give different results.
donjajo
Dec 22, 2025Aspirant
Thank you for your response. Yes, I am using the original adapter that came with my order.
If I am using a different adapter, what spec should I look out for?
- StephenBDec 22, 2025Guru - Experienced User
donjajo wrote:
If I am using a different adapter, what spec should I look out for?
12V, 1.5A AC/DC. Including PAV12V25 in the search string might help if you are looking to purchase one.
Is the switch or router connected to the AP powered up during your testing?
- donjajoDec 22, 2025Aspirant
You mean 12V instead of 2V? The original power adapter is 12V, 1.5A
AP is access point, right? Yes, the router is connected to the AP powered up during the testing.
- StephenBDec 22, 2025Guru - Experienced User
donjajo wrote:
You mean 12V instead of 2V?
yes, sorry for the confusion...
donjajo wrote:
the router is connected to the AP powered up during the testing.
Good. That eliminates the router as a possible trigger for the problem.
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