diff --git a/main/app_main.cpp b/main/app_main.cpp
index 36cb4b3..e0b082d 100644
--- a/main/app_main.cpp
+++ b/main/app_main.cpp
@@ -1,3 +1,4 @@
+#include <driver/gpio.h>
 #include <esp_err.h>
 #include <esp_log.h>
 #include <esp_matter.h>
@@ -414,6 +415,13 @@ void app_event_cb(const ChipDeviceEvent *event, intptr_t arg)
 
 extern "C" void app_main()
 {
+    // Select the external antenna.
+    // GPIO03 low + GPIO14 high routes the RF switch to the U.FL connector.
+    gpio_set_direction(GPIO_NUM_3,  GPIO_MODE_OUTPUT);
+    gpio_set_direction(GPIO_NUM_14, GPIO_MODE_OUTPUT);
+    gpio_set_level(GPIO_NUM_3,  0);
+    gpio_set_level(GPIO_NUM_14, 1);
+
     // General-purpose NVS partition: auto-erased on unrecoverable corruption.
     // Holds only non-Matter app state; safe to wipe because all Matter
     // credentials live on the protected nvs_matter partition.
diff --git a/sdkconfig.defaults b/sdkconfig.defaults
index ecf31ae..2c8462b 100644
--- a/sdkconfig.defaults
+++ b/sdkconfig.defaults
@@ -85,6 +85,9 @@ CONFIG_ENABLE_WIFI_STATION=n
 # under marginal RF conditions. pdMS_TO_TICKS() in app code is unaffected.
 CONFIG_FREERTOS_HZ=1000
 
+# Matter device product name shown in Home Assistant and other controllers.
+CONFIG_DEVICE_PRODUCT_NAME="GH LK Control"
+
 # Matter + logging defaults
 CONFIG_ESP_MATTER_ENABLE_DATA_MODEL=y
 # Canonical integer form for the log-level choice (2 = INFO)