diff --git a/apps/iot/src/endpoint/iot_jinzhi_endpoint.erl b/apps/iot/src/endpoint/iot_jinzhi_endpoint.erl
index 276c7a4..df1f5e4 100644
--- a/apps/iot/src/endpoint/iot_jinzhi_endpoint.erl
+++ b/apps/iot/src/endpoint/iot_jinzhi_endpoint.erl
@@ -185,9 +185,19 @@ format_events(LocationCode, DynamicLocationCode, EventType, #{<<"event_code">> :
                                           end, Attachments0),
 
     % <<"occurrenceTime">> => <<"2023-06-10 12:00:00">>,
-
+    % TODO delete
+    FakeLocationCodes = application:get_env(iot, fake_location_codes, []),
+    LocationCode1 = case length(FakeLocationCodes) > 0 of
+                        true ->
+                            Len = length(FakeLocationCodes),
+                            RandomIndex = rand:uniform(Len),
+                            lists:nth(RandomIndex, FakeLocationCodes);
+                        false ->
+                            LocationCode
+                    end,
     DeviceInfo = #{
-        <<"location">> => LocationCode,
+        % <<"location">> => LocationCode,
+        <<"location">> => LocationCode1,
         <<"category">> => EventCode,
         <<"description">> => Description,
         <<"occurrenceTime">> => Datetime,
diff --git a/apps/iot/src/iot_watchdog.erl b/apps/iot/src/iot_watchdog.erl
index 3f6b500..66112c9 100644
--- a/apps/iot/src/iot_watchdog.erl
+++ b/apps/iot/src/iot_watchdog.erl
@@ -169,7 +169,7 @@ handle_info({timeout, _, warn_ticker}, State = #state{warn_buf = WarnBuf, url =
     case length(WarnBuf) > 0 of
         true ->
             Warn0 = hd(WarnBuf),
-            Warn = iolist_to_binary([Warn0, <<"(累计: ">>, length(WarnBuf), <<")">>]),
+            Warn = iolist_to_binary([Warn0, <<"(累计: ">>, integer_to_binary(length(WarnBuf)), <<")">>]),
             Body = format_warn(Warn, Users, PriKey),
             case catch do_post(Url, Body) of
                 {ok, Resp} ->
diff --git a/config/sys-prod.config b/config/sys-prod.config
index 7ec9e42..d625e23 100644
--- a/config/sys-prod.config
+++ b/config/sys-prod.config
@@ -14,6 +14,10 @@
     %% 数据的最大缓存量
     {device_cache_size, 200},
 
+    {fake_location_codes, [
+        "0517105041011073100004"
+    ]},
+
     {watchdog, [
       {pri_key, "jinzhi_watchdog_pri.key"},
       {url, "http://172.30.37.242:8080/hqtaskcenterapp/sys/taskCenter/taskReceive/sendNotice.do"},