heartbeat warning and error time changed for tradfri button

z_server/devices/__init__.py

@@ -169,7 +169,8 @@ class tradfri_sw_br_ct(base):
 
 
 class tradfri_button(base):
-    pass
+    LAST_MSG_WARNING = 15 * 60 * 60
+    LAST_MSG_ERROR = 24 * 60 * 60
 
 
 class livarno_sw_br_ct(base):