---
- platform: template
  sensors:
    number_doors_open:
      friendly_name: "Open Doors"
      unit_of_measurement: door(s)
      value_template: >
        {{ label_entities(label_id('external')) | expand | selectattr('state', '==', 'on') | map(attribute='entity_id') | select('in', label_entities("door")) | list | count }}

#        {{ states.binary_sensor | selectattr('object_id', 'match', 'door_.*') | selectattr('state', '==', 'on') | map(attribute='entity_id') | list | count }}