Panel disconnects from network when Ethernet and power adapter are connected

Konnected Alarm Panels
1

I’m experiencing an issue where, when I connect the power adapter to the panel, the network connection is interrupted (connected via Ethernet).

I am a new user, so still learning the panel and the feature set. System currently has three door sensors, two glass break sensors (from 1989), and an outdoor siren mounted behind a crawlspace vent. The siren is a Moose MPI-38, and according to the spec sheet I was able to locate online, it draws .8 amps at 6V and 1.6 amps at 12V. Sort of power hungry, so I think I need the power adapter in addition to PoE. As it’s connected now, with power adapter, I can make the siren sound via SmartThings, but it glitches the app, never shows as powered on, sounds for anywhere between 10 and 30 seconds, and then I think the board resets.

Would be grateful for any direction here! Entirely open to replacing the siren and/the glass break sensors if necessary.

2

Plugging in the power adapter shouldn’t affect the Ethernet connection. What you’re describing sounds odd and unexpected. Do you still see the green LED on the Ethernet port?

3

When I plug in the power adapter, there is no activity on the Ethernet port, even after waiting a few minutes. If I unplug the power adapter, the lights begin to flash again around the Ethernet port.

4

Can you try moving it to an un-powered Ethernet port on your switch/router? Maybe there’s some odd interaction between the PoE circuit. Is your switch/router certified for PoE+ (802.3at)?