Turn on group only if >2 sensors detect motion

Configuration
1

Is there any neat way of making a binary sensor that includes multiple motion sensors and only turns on if two or more sensors detect motion?

2

No, but you could use an input boolean and an automation to get the logic you want. You could then use a template binary sensor that uses the state of the boolean if that’s what you want.

3

Based on some code posted by @123 last night this for a different purpose, this will create a binary sensor that is on when any 2 motion sensors listed are ‘on’

Add this to your binary_sensor section in configuration.yaml

- platform: template
  sensors:
    motion_two_simultaneous:
      device_class: motion
      value_template: >
        {% set sensors = [states.binary_sensor.toilet_motion,
                          states.binary_sensor.bathroom_motion,
                          states.binary_sensor.hallway_motion,
                          states.binary_sensor.landing_motion,
                          states.binary_sensor.kitchen_motion,
                          states.binary_sensor.ensuite_motion] %}
        {{ sensors | selectattr('state','eq','on') | list | count == 2 }}

Actually, just re-read you post, this will do 2 or more:

- platform: template
  sensors:
    motion_two_simultaneous:
      device_class: motion
      value_template: >
        {% set sensors = [states.binary_sensor.toilet_motion,
                          states.binary_sensor.bathroom_motion,
                          states.binary_sensor.hallway_motion,
                          states.binary_sensor.landing_motion,
                          states.binary_sensor.kitchen_motion,
                          states.binary_sensor.ensuite_motion] %}
        {{ sensors | selectattr('state','eq','on') | list | count >= 2 }}
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