can you allow hidden entities to be ignored please, see below screenshots I am using Battery Notes (GitHub - andrew-codechimp/HA-Battery-Notes: A Home Assistant integration to provide battery notes of devices) which allows you to track when batteries where changed etc, but it uses it own Battery+ entity, and allow you to hide the original entity.
But when using this integration your blueprint finds both battery entities and show them both in the messages.
Great blueprint! Didn’t find if it is possible to add sensor location to the low battery message
Welcome to the community.
You would have to do this in the custom actions. I will put it on the list of feature requests.
Blacky 
Hello, great blueprint ! 
I wonder if it’s possible to optionally integrate z2m “not ‘last seen’ since e.g. 24 hours” feature how it’s reported here:
{% set result = namespace(sensors=[]) %}
{% for state in states.sensor | rejectattr('attributes.device_class', 'undefined') | selectattr('attributes.device_class', '==', 'timestamp') %}
{% if 'last_seen' in state.entity_id and (states(state.entity_id) == 'unavailable' or ((as_timestamp(now()) - as_timestamp(states(state.entity_id))) > ((24 | int) * 60 * 60))) %}
{% set result.sensors = result.sensors + [state.name | regex_replace(find=' last seen', replace='') ~ ' (' ~ relative_time(strptime(states(state.entity_id), '%Y-%m-%dT%H:%M:%S%z', 'unavailable')) ~ ')'] %}
{% endif %}
{% endfor %}
{{ result.sensors | join('\n') | truncate(254, True) }}