diff --git a/apps/iot/src/mocker/iot_mock.erl b/apps/iot/src/mocker/iot_mock.erl
index 2f42314..2b20efe 100644
--- a/apps/iot/src/mocker/iot_mock.erl
+++ b/apps/iot/src/mocker/iot_mock.erl
@@ -15,6 +15,15 @@
 -export([insert_services/1]).
 -export([insert_endpoints/0, test_http/0, test_mysql/0, test_mqtt/0, test_influxdb/0]).
 
+fun_x(LocationCode, Fields, Timestamp) ->
+    Data = #{
+        <<"version">> => <<"1.0">>,
+        <<"location_code">> => LocationCode,
+        <<"ts">> => Timestamp,
+        <<"properties">> => Fields
+    },
+    {ok, iolist_to_binary(jiffy:encode(Data, [force_utf8]))}.
+
 test_influxdb() ->
     UUID = <<"device123123">>,