diff --git a/README.md b/README.md
index 3ed2592..2dd6712 100644
--- a/README.md
+++ b/README.md
@@ -74,3 +74,6 @@
 - 数据长度错误回包
   - `B5 F4 03 65 72 72 40`, 有效数据为 `err`
 
+### 3. 读取数据时间间隔
+
+- 推荐数据时间间隔至少为500ms
\ No newline at end of file