diff --git a/docs/datavalidator/check_json.py b/docs/datavalidator/check_json.py
index 8769cc614..bd8ee7d67 100644
--- a/docs/datavalidator/check_json.py
+++ b/docs/datavalidator/check_json.py
@@ -51,6 +51,10 @@ def check_number(value: Any) -> bool:
     return value is None or isinstance(value, int)
 
 
+def check_float(value: Any) -> bool:
+    return value is None or isinstance(value, int) or isinstance(value, float)
+
+
 def check_boolean(value: Any) -> bool:
     return value is None or value is False or value is True
 
@@ -156,6 +160,8 @@ class Checker:
                 checker = check_string
             elif field_type in ("number", "timestamp", "relation"):
                 checker = check_number
+            elif field_type == "float":
+                checker = check_float
             elif field_type == "boolean":
                 checker = check_boolean
             elif field_type in ("string[]", "generic-relation-list"):
diff --git a/docs/models.yml b/docs/models.yml
index 4339b9c0b..e9e24a4d0 100644
--- a/docs/models.yml
+++ b/docs/models.yml
@@ -2071,11 +2071,21 @@ projector_message:
 
 projector_countdown:
   id: number
-  title: string
-  description: string
-  default_time: number
-  countdown_time: number  # float?
-  running: boolean
+  title:
+    type: string
+    required: true
+  description:
+    type: string
+    default: ""
+  default_time:
+    type: number
+    default: 60
+  countdown_time:
+    type: float
+    default: 60
+  running:
+    type: boolean
+    default: false
 
   projection_ids:
     type: relation-list