For my EnOcean PTM 215z switches I need to enable the setting “Home Assistant legacy action sensors” under Z2M->Settings-> Home Assistant integration, but when I do i get the error “Extension with name HomeAssistant already present.”
Screenshot:
I need to enable this setting or the EnOcean switches does not have any action entity, which in turn means I cannot add them to a blueprint and work as switches.
I can’t find any other posts dealing with this issue.
Any ideas on where to start?
Do you though?
Everything you can do with the legacy sensor you can do with the modern (aka experimental) sensors.
Either way you should be able to change it in config/zigbee2mqtt/configuration.yaml See: Home Assistant integration | Zigbee2MQTT
Thank you @tom_l , it worked setting it in yaml 
Action entity is showing on my switches now!
Great but they will be depreciated eventually.
Everything you can do with action (legacy) entities you can do with event (new) entities. e.g.
- id: 23cd99f6-6054-43cc-9fbe-a89570fb0bfa
alias: Master Bed Button Events
triggers:
- trigger: state
entity_id: event.master_bed_button_action
to: ~
conditions:
- condition: template
value_template: "{{trigger.from_state.state != 'unavailable'}}"
actions:
- choose:
- conditions:
- condition: template
value_template: "{{trigger.to_state.attributes.event_type == 'single'}}"
sequence:
- action: light.toggle
target:
entity_id:
- light.lifx_mstr_bed_lamp_left
- light.lifx_mstr_bed_lamp_right
- action: lifx.set_state
entity_id:
- light.lifx_mstr_bed_lamp_left
- light.lifx_mstr_bed_lamp_right
data:
brightness: "{{ states('sensor.calculated_light_brightness_25pct_min')|int(0) }}"
color_temp_kelvin: 2700
- conditions:
- condition: template
value_template: "{{trigger.to_state.attributes.event_type == 'double'}}"
sequence:
- action: script.master_bed_close
- conditions:
- condition: template
value_template: "{{trigger.to_state.attributes.event_type == 'triple'}}"
sequence:
- action: script.master_bed_east_open
- conditions:
- condition: template
value_template: "{{trigger.to_state.attributes.event_type == 'hold'}}"
sequence:
- action: script.master_bed_favourite
do you mind if I ask what kind of switch/dimmer is that that has these kind of triple press gestures and stuff like that?
thanks.
That automation is for this one: Wireless Mini Switch T1 - Aqara
But most (all?) buttons can do this. e.g. I also have some three and four button versions of these Loratap remotes: https://vi.aliexpress.com/item/1005004988714663.html they can do this too. The only thing I’m annoyed about is that there is only one hold event for the entire remote (instead a hold event of per button).
- id: a9918825-dc29-409b-ba37-832f9dd0f6e6
alias: Dining Button Events
triggers:
- trigger: state
entity_id: event.dining_button_action
to: ~
conditions:
- condition: template
value_template: "{{trigger.from_state.state != 'unavailable'}}"
actions:
- choose:
- conditions:
- condition: template
value_template: "{{trigger.to_state.attributes.event_type == '1_single'}}"
sequence:
- repeat:
count: 6
sequence:
- action: media_player.volume_up
target:
entity_id:
- media_player.dining_zone
- delay: 0.1
- conditions:
- condition: template
value_template: "{{trigger.to_state.attributes.event_type == '1_double'}}"
sequence:
- repeat:
count: 9
sequence:
- action: media_player.volume_up
target:
entity_id:
- media_player.dining_zone
- delay: 0.1
- conditions:
- condition: template
value_template: "{{trigger.to_state.attributes.event_type == '2_single'}}"
sequence:
- repeat:
count: 6
sequence:
- action: media_player.volume_down
target:
entity_id:
- media_player.dining_zone
- delay: 0.1
- conditions:
- condition: template
value_template: "{{trigger.to_state.attributes.event_type == '2_double'}}"
sequence:
- repeat:
count: 9
sequence:
- action: media_player.volume_down
target:
entity_id:
- media_player.dining_zone
- delay: 0.1
- conditions:
- condition: template
value_template: "{{trigger.to_state.attributes.event_type == '3_single'}}"
sequence:
- action: media_player.media_next_track
target:
entity_id:
- media_player.lounge_zone
- conditions:
- condition: template
value_template: "{{trigger.to_state.attributes.event_type == '3_double'}}"
sequence:
- action: media_player.media_previous_track
target:
entity_id:
- media_player.lounge_zone
- conditions:
- condition: template
value_template: "{{trigger.to_state.attributes.event_type == '4_single'}}"
sequence:
- action: media_player.media_play_pause
target:
entity_id:
- media_player.lounge_zone
- conditions:
- condition: template
value_template: "{{trigger.to_state.attributes.event_type == 'hold'}}"
sequence:
- action: media_player.toggle
target:
entity_id:
- media_player.dining_zone
- action: media_player.select_source
target:
entity_id:
- media_player.dining_zone
data:
source: Main Zone Sync
So one has to edit the config again because changes made for this via web gui do not work despite the button for it. 
Could you elaborate a bit on the „events“ topic? Because that is not showing either. Making it broken again…
Thanks