I need to use PoE for my Deco X50e, but the power requirement is not specified in any of the provided documentation. what is the correct voltage and power needs for this device?

Can I use a S4 modem and a new Deco X50 PoE on the same mesh network?

I have a 3 router mesh system covering approximately 100m sqr. One of the 3 routers keeps dropping in and out of signal (the light on top turns red for a bit). I do not believe it is a signal strength