diff --git a/src/apis/domains/device/diag-info/ndm-security-box-diag-info.ts b/src/apis/domains/device/diag-info/ndm-security-box-diag-info.ts
index 401d881..9e0cdfb 100644
--- a/src/apis/domains/device/diag-info/ndm-security-box-diag-info.ts
+++ b/src/apis/domains/device/diag-info/ndm-security-box-diag-info.ts
@@ -3,11 +3,7 @@ export interface NdmSecurityBoxDiagInfo {
   info: [
     {
       addrCode: number;
-      circuits: {
-        current: number;
-        status: number;
-        voltage: number;
-      }[];
+      circuits: NdmSecurityBoxCircuit[];
       fanSpeeds: number[];
       humidity: number;
       switches: number[];
@@ -19,3 +15,9 @@ export interface NdmSecurityBoxDiagInfo {
     CPU使用率: string;
   };
 }
+
+export interface NdmSecurityBoxCircuit {
+  current: number;
+  status: number;
+  voltage: number;
+}