diff --git a/source/_integrations/alarm_control_panel.mqtt.markdown b/source/_integrations/alarm_control_panel.mqtt.markdown
index 1d11dadb497..39fefb6d722 100644
--- a/source/_integrations/alarm_control_panel.mqtt.markdown
+++ b/source/_integrations/alarm_control_panel.mqtt.markdown
@@ -56,6 +56,11 @@ availability:
       description: An MQTT topic subscribed to receive availability (online/offline) updates.
       required: true
       type: string
+availability_mode:
+  description: When `availability` is configured, this controls the conditions needed to set the entity to `available`. Valid entries are `all`, `any`, and `latest`. If set to `all`, `payload_available` must be received on all configured availability topics before the entity is marked as online. If set to `any`, `payload_available` must be received on at least one configured availability topic before the entity is marked as online. If set to `latest`, the last `payload_available` or `payload_not_available` received on any configured availability topic controls the availability.
+  required: false
+  type: string
+  default: latest
 availability_topic:
   description: The MQTT topic subscribed to receive availability (online/offline) updates. Must not be used together with `availability`.
   required: false