diff --git a/source/_integrations/ukraine_alarm.markdown b/source/_integrations/ukraine_alarm.markdown
index 462fdb16b9b..51723c00dc0 100644
--- a/source/_integrations/ukraine_alarm.markdown
+++ b/source/_integrations/ukraine_alarm.markdown
@@ -14,7 +14,7 @@ ha_platforms:
 ha_integration_type: integration
 ---
 
-The Ukraine Alarm integration uses the [Ukraine Alarm](https://www.ukrainealarm.com/) web service to offer air-raid siren notifications. The integration will create 4 binary sensors for your selected region in Ukraine:
+The Ukraine Alarm integration uses the siren.pp.ua API - public wrapper for [Ukraine Alarm](https://www.ukrainealarm.com/) web service to offer air-raid siren notifications. The integration will create 4 binary sensors for your selected region in Ukraine:
 
 - Air
 - Artillery
@@ -25,6 +25,8 @@ Siren check interval is set to 10 seconds to avoid overloading the API and still
 
 ## Setup
 
-To generate an Ukraine Alarm API key, go to [Ukraine Alarm APIs](https://api.ukrainealarm.com/) page, fill in a form and wait for an email with an API key.
-
 {% include integrations/config_flow.md %}
+
+## Limitations
+
+You can add up to 5 regions for monitoring to don't hit API rate limit.