Help for Automation for notification about a new device (nmap device tracker)

[fluffymadness]

What I have already: Basically I’m using the code from here

New Device Tracker Events

I’m not a Node Red user, anyone know how to make this work as a template? I guess I didn’t really think about the fact that those devices would have the device_tracker domain and I could look for that in the event… can you find a way to pull the hostname using Node Red? It didn’t seem to populate that until after the entity was created. (Although it doesn’t seem to pull that for all devices)

This is working fine, however I want to show the following additional information which is not available in the entity_registry_updated event, so I would have to access the entity of the device tracker domain somehow for this information:

• Hostname
• Mac

Has anyone any idea how I could get this working?

alias: New Device
description: ''
trigger:
  - platform: event
    event_type: entity_registry_updated
condition:
  - condition: template
    value_template: '{{trigger.event.data.entity_id.split(''.'')[0] == ''device_tracker'' }}'
action:
  - service: notify.notify
    data:
      title: New device joined Network
      message: >
        New device tracked: ({{trigger.event.data.entity_id}}) Host:
        {{trigger.event.data.host_name}} Mac-address: {{trigger.event.data.mac}}
mode: single