Advice low power low cost poe AC 5/2.4 GHz dual 1000 ethernet


actualy i am using the xiaomi 3g router .
I whant to extand my wifi coverage and to decrase the power cosumption.

So i will redesing my home network & use some home automation to powerdown unused equipment.

could you advice a good accespoint with the following specs:
low power cosumption
should be lowcost preferably +-50 euro
supported by openwrt
poe in 802.3af/at
2 X 1000 Ethernet
Wireless 2.4 GHz & Wireless 5 GHz

The most important spec is the power cosumption, so if it's an openwrt compatible router with 5 port i'ts ok.