UniFi access points on a different subnet to the controller : Go Wireless NZ Help Centre
UAP-AC-PRO: setting the management VLAN on a Unifi AP – Dan Langille's Other Diary
UBIQUITI UniFi AC HD (UAP-AC-HD) 802.11ac Wave 2 Enterprise Wi-Fi Access Point - The source for WiFi products at best prices in Europe - wifi-stock.com