see event triggers
Something like:
- id: button_xiaomi
alias: xiaomi button
trigger:
- platform: event
event_type: zha_event
event_data:
unique_id: zha_event.lumi_lumi_sensor_switch_aq2_02132110_1
attribute_name: on_off
value: Bool.true
action:
- service: light.toggle
entity_id: light.my_awesome_light