diff --git a/STM32F103_App1/HardWare/RELAY/ext_relay.c b/STM32F103_App1/HardWare/RELAY/ext_relay.c
index fd24f91..c3b2831 100644
--- a/STM32F103_App1/HardWare/RELAY/ext_relay.c
+++ b/STM32F103_App1/HardWare/RELAY/ext_relay.c
@@ -378,7 +378,7 @@ void ext_relay_process(void)
                     log_warn("> EXT: SW%d %s未生效 (输出=%02X 反馈=%02X 故障=%02X, 命令前输出=%d 反馈=%d)",
                              cmd_ch + 4, cmd_on ? "开" : "关", s_state, s_fb, s_fault,
                              cmd_state_before, cmd_fb_before);
-                    ext_respond(0, "\xE8\xB4\x9F\xE8\xBD\xBD\xE6\x96\xAD\xE5\xBC\x80\xE6\x88\x96\xE7\xBB\xA7\xE7\x94\xB5\xE5\x99\xA8\xE6\x8D\x9F\xE5\x9D\x8F");   /* 负载断开或继电器损坏(UTF-8 字节转义, 绕开源码 GBK; 平台乱码则改 GBK 字节) */
+                    ext_respond(0, "Load unpowered / relay failure !");   /* 与板载失败文案一致 */
                 }
                 cmd_txn = TXN_NONE;
                 ext_save_state();      /* 断电记忆: 以实际输出状态落盘 */
diff --git a/STM32F103_App1/HardWare/RELAY/relay.c b/STM32F103_App1/HardWare/RELAY/relay.c
index 49fae19..c8859b6 100644
--- a/STM32F103_App1/HardWare/RELAY/relay.c
+++ b/STM32F103_App1/HardWare/RELAY/relay.c
@@ -34,6 +34,8 @@ void relayCmdProcess(void)
         /* 等待继电器反馈电路稳定 */
         if (HAL_GetTick() - relay_cmd_tick < 100) return;
         fb_after = relayReadFb(ch);
+        /* 测试: 仅第 2 路反馈失败应答改中文(UTF-8 字节), 其余路保持英文 */
+        const char *failmsg = (ch == 2) ? "\xE8\xB4\x9F\xE8\xBD\xBD\xE6\x96\xAD\xE5\xBC\x80\xE6\x88\x96\xE7\xBB\xA7\xE7\x94\xB5\xE5\x99\xA8\xE6\x8D\x9F\xE5\x9D\x8F" : "Load unpowered / relay failure !";
         if (RELAY_FB_ENABLE) {
             if (MqttInfoStr.Relay_State[ch]) {
                 if (relay_cmd_fb_before == FB_INACTIVE && fb_after == FB_ACTIVE) {
@@ -41,7 +43,7 @@ void relayCmdProcess(void)
                     NET_publish_response(relay_cmd_id, 1, "OK");
                 } else {
                     log_warn("> 继电器: SW%d 未接负载或继电器断开", ch);
-                    NET_publish_response(relay_cmd_id, 0, "Load unpowered / relay failure !");
+                    NET_publish_response(relay_cmd_id, 0, failmsg);
                 }
             } else {
                 if (relay_cmd_fb_before == FB_ACTIVE && fb_after == FB_INACTIVE) {
@@ -49,7 +51,7 @@ void relayCmdProcess(void)
                     NET_publish_response(relay_cmd_id, 1, "OK");
                 } else {
                     log_warn("> 继电器: SW%d 未接负载或继电器断开", ch);
-                    NET_publish_response(relay_cmd_id, 0, "Load unpowered / relay failure !");
+                    NET_publish_response(relay_cmd_id, 0, failmsg);
                 }
             }
         } else {