diff --git a/apps/iot/priv/env.config b/apps/iot/priv/env.config
index 663b93e..f58cd89 100644
--- a/apps/iot/priv/env.config
+++ b/apps/iot/priv/env.config
@@ -1,5 +1,5 @@
 [
     {super_device_uuids, [
-        {name, <<"test">>}
+        <<"29717641877153792017243119445063">>
     ]}
 ].
\ No newline at end of file
diff --git a/apps/iot/src/iot_env.erl b/apps/iot/src/iot_env.erl
index d5e4462..8bf2711 100644
--- a/apps/iot/src/iot_env.erl
+++ b/apps/iot/src/iot_env.erl
@@ -22,12 +22,14 @@
 new() ->
     ets:new(iot_env, [public, set, named_table, {read_concurrency, true}, {keypos, 2}]),
     Envs = load_env(),
+    lager:debug("[iot_env] load envs: ~p", [Envs]),
     [ets:insert(iot_env, #env{key = Key, val = Val}) || {Key, Val} <- Envs],
     ok.
 
 -spec reload() -> ok.
 reload() ->
     Envs = load_env(),
+    lager:debug("[iot_env] load envs: ~p", [Envs]),
     [ets:insert(iot_env, #env{key = Key, val = Val}) || {Key, Val} <- Envs],
     ok.