diff --git a/get-started/csi_recv_router/main/app_main.c b/get-started/csi_recv_router/main/app_main.c
index 89c973a..62a9de0 100644
--- a/get-started/csi_recv_router/main/app_main.c
+++ b/get-started/csi_recv_router/main/app_main.c
@@ -90,6 +90,7 @@ static int s_send_frequency = CONFIG_SEND_FREQUENCY_DEFAULT;
 static int8_t s_tx_power_dbm = 10;
 static esp_ping_handle_t s_ping_handle = NULL;
 static volatile led_mode_t s_led_mode = LED_OFF;
+static bool s_led_quiet = false;  /* quiet mode: off normally, solid on motion/presence */
 static volatile int64_t s_last_csi_time = 0;
 static volatile int64_t s_identify_end_time = 0;
 static volatile bool s_ota_in_progress = false;
@@ -301,11 +302,15 @@ static void config_load_nvs(void)
         if (nvs_get_i32(h, "chanscan_int", &chanscan_int) == ESP_OK && chanscan_int >= 60 && chanscan_int <= 3600) {
             s_chanscan_interval_s = (int)chanscan_int;
         }
+        int8_t led_quiet;
+        if (nvs_get_i8(h, "led_quiet", &led_quiet) == ESP_OK) {
+            s_led_quiet = (led_quiet != 0);
+        }
         nvs_close(h);
-        ESP_LOGI(TAG, "NVS loaded: hostname=%s rate=%d tx_power=%d adaptive=%d threshold=%.6f ble=%d target=%s:%d csi_mode=%d hybrid_n=%d powersave=%d presence=%d pr_thresh=%.4f baseline_nsub=%d",
+        ESP_LOGI(TAG, "NVS loaded: hostname=%s rate=%d tx_power=%d adaptive=%d threshold=%.6f ble=%d target=%s:%d csi_mode=%d hybrid_n=%d powersave=%d presence=%d pr_thresh=%.4f baseline_nsub=%d led_quiet=%d",
                  s_hostname, s_send_frequency, s_tx_power_dbm, s_adaptive, s_motion_threshold, s_ble_enabled,
                  s_target_ip, s_target_port, (int)s_csi_mode, s_hybrid_interval, s_powersave,
-                 s_presence_enabled, s_pr_threshold, s_baseline_nsub);
+                 s_presence_enabled, s_pr_threshold, s_baseline_nsub, s_led_quiet);
     } else {
         ESP_LOGI(TAG, "NVS: no saved config, using defaults");
     }
@@ -401,10 +406,25 @@ static void led_task(void *arg)
         if (s_led_mode == LED_SOLID && s_identify_end_time > 0) {
             if (esp_timer_get_time() >= s_identify_end_time) {
                 s_identify_end_time = 0;
-                s_led_mode = LED_SLOW_BLINK;
+                s_led_mode = s_led_quiet ? LED_OFF : LED_SLOW_BLINK;
             }
         }
 
+        /* Quiet mode: off normally, solid on motion/presence, OTA pattern during OTA */
+        if (s_led_quiet && s_led_mode != LED_OTA && s_identify_end_time == 0) {
+            bool activity = s_motion_detected ||
+                           (s_presence_enabled && s_baseline_nsub > 0 && s_pr_last_score > s_pr_threshold);
+            if (activity) {
+                gpio_set_level(LED_GPIO, 1);
+                led_on = true;
+            } else {
+                gpio_set_level(LED_GPIO, 0);
+                led_on = false;
+            }
+            vTaskDelay(pdMS_TO_TICKS(200));
+            continue;
+        }
+
         /* Auto-switch between slow/fast blink based on CSI activity */
         if (s_led_mode == LED_SLOW_BLINK || s_led_mode == LED_FAST_BLINK) {
             int64_t now = esp_timer_get_time();
@@ -1487,6 +1507,30 @@ static int cmd_handle(const char *cmd, char *reply, size_t reply_size)
         return strlen(reply);
     }
 
+    /* LED [QUIET|AUTO] */
+    if (strncmp(cmd, "LED", 3) == 0) {
+        if (cmd[3] == '\0' || cmd[3] == '\n') {
+            snprintf(reply, reply_size, "OK LED %s", s_led_quiet ? "quiet" : "auto");
+            return strlen(reply);
+        }
+        if (strncmp(cmd + 4, "QUIET", 5) == 0) {
+            s_led_quiet = true;
+            s_led_mode = LED_OFF;
+            config_save_i8("led_quiet", 1);
+            snprintf(reply, reply_size, "OK LED quiet (off, solid on motion)");
+            return strlen(reply);
+        }
+        if (strncmp(cmd + 4, "AUTO", 4) == 0) {
+            s_led_quiet = false;
+            s_led_mode = LED_SLOW_BLINK;
+            config_save_i8("led_quiet", 0);
+            snprintf(reply, reply_size, "OK LED auto (blink)");
+            return strlen(reply);
+        }
+        snprintf(reply, reply_size, "ERR LED [QUIET|AUTO]");
+        return strlen(reply);
+    }
+
     /* STATUS */
     if (strncmp(cmd, "STATUS", 6) == 0) {
         int64_t up = esp_timer_get_time() / 1000000LL;
@@ -1546,7 +1590,7 @@ static int cmd_handle(const char *cmd, char *reply, size_t reply_size)
                  " hostname=%s version=%s adaptive=%s motion=%d ble=%s target=%s:%d"
                  " temp=%.1f csi_count=%lu boots=%lu rssi_min=%d rssi_max=%d"
                  " csi_mode=%s hybrid_n=%d auth=%s flood_thresh=%d/%d powersave=%s"
-                 " presence=%s pr_score=%.4f chanscan=%s"
+                 " presence=%s pr_score=%.4f chanscan=%s led=%s"
                  " nvs_used=%lu nvs_free=%lu nvs_total=%lu part_size=%lu"
                  " built=%s_%s idf=%s chip=%sr%dc%d",
                  uptime_str, (long long)up, (unsigned long)heap, rssi, channel, (int)s_tx_power_dbm,
@@ -1561,7 +1605,7 @@ static int cmd_handle(const char *cmd, char *reply, size_t reply_size)
                  s_flood_thresh, s_flood_window_s,
                  s_powersave ? "on" : "off",
                  s_presence_enabled ? "on" : "off", s_pr_last_score,
-                 s_chanscan_enabled ? "on" : "off",
+                 s_chanscan_enabled ? "on" : "off", s_led_quiet ? "quiet" : "auto",
                  (unsigned long)nvs_stats.used_entries,
                  (unsigned long)nvs_stats.free_entries,
                  (unsigned long)nvs_stats.total_entries,