diff --git a/src/ShellyPlus1/shelly_init.cpp b/src/ShellyPlus1/shelly_init.cpp
index e56794bb..1bc8a67b 100644
--- a/src/ShellyPlus1/shelly_init.cpp
+++ b/src/ShellyPlus1/shelly_init.cpp
@@ -56,6 +56,7 @@ void CreatePeripherals(std::vector<std::unique_ptr<Input>> *inputs,
     inputs->emplace_back(in2);
 
   } else {
+    RestoreUART();
     InitSysLED(LED_GPIO, LED_ON);
   }
   InitSysBtn(BTN_GPIO, BTN_DOWN);
@@ -67,7 +68,7 @@ void CreateComponents(std::vector<std::unique_ptr<Component>> *comps,
   bool gdo_mode = mgos_sys_config_get_shelly_mode() == (int) Mode::kGarageDoor;
   bool ext_sensor_switch = (FindInput(2) != nullptr);
   bool detatched_sensor =
-      (mgos_sys_config_get_sw1_in_mode() != (int) InMode::kDetached) &&
+      (mgos_sys_config_get_sw1_in_mode() == (int) InMode::kDetached) &&
       !gdo_mode && ext_sensor_switch;
   bool single_accessory = sensors.empty() && !detatched_sensor;
   if (gdo_mode) {
diff --git a/src/ShellyPlus1PM/shelly_init.cpp b/src/ShellyPlus1PM/shelly_init.cpp
index 7b66eebf..5772751a 100644
--- a/src/ShellyPlus1PM/shelly_init.cpp
+++ b/src/ShellyPlus1PM/shelly_init.cpp
@@ -118,6 +118,7 @@ void CreatePeripherals(std::vector<std::unique_ptr<Input>> *inputs,
     inputs->emplace_back(in2);
 
   } else {
+    RestoreUART();
     InitSysLED(LED_GPIO, LED_ON);
   }
   InitSysBtn(BTN_GPIO, BTN_DOWN);
@@ -129,7 +130,7 @@ void CreateComponents(std::vector<std::unique_ptr<Component>> *comps,
   bool gdo_mode = mgos_sys_config_get_shelly_mode() == (int) Mode::kGarageDoor;
   bool ext_sensor_switch = (FindInput(2) != nullptr);
   bool detatched_sensor =
-      (mgos_sys_config_get_sw1_in_mode() != (int) InMode::kDetached) &&
+      (mgos_sys_config_get_sw1_in_mode() == (int) InMode::kDetached) &&
       !gdo_mode && ext_sensor_switch;
   bool single_accessory = sensors.empty() && !detatched_sensor;
   if (gdo_mode) {
diff --git a/src/ShellyPlus2PM/shelly_init.cpp b/src/ShellyPlus2PM/shelly_init.cpp
index bfee113d..b3c45953 100644
--- a/src/ShellyPlus2PM/shelly_init.cpp
+++ b/src/ShellyPlus2PM/shelly_init.cpp
@@ -213,8 +213,6 @@ void CreatePeripherals(std::vector<std::unique_ptr<Input>> *inputs,
   int pin_out = 0;
   int pin_in = 1;
 
-  // TODO: this blocks UART as UART TX is GPIO1. We should release if there is
-  // no
   if (DetectAddon(pin_in, pin_out)) {
     s_onewire.reset(new Onewire(pin_in, pin_out));
     sensors = s_onewire->DiscoverAll();
@@ -228,6 +226,7 @@ void CreatePeripherals(std::vector<std::unique_ptr<Input>> *inputs,
     inputs->emplace_back(in_digital);
 
   } else {
+    RestoreUART();
     InitSysLED(LED_GPIO, LED_ON);
   }
 
@@ -237,8 +236,6 @@ void CreatePeripherals(std::vector<std::unique_ptr<Input>> *inputs,
 void CreateComponents(std::vector<std::unique_ptr<Component>> *comps,
                       std::vector<std::unique_ptr<mgos::hap::Accessory>> *accs,
                       HAPAccessoryServerRef *svr) {
-  bool single_accessory = sensors.empty();
-
   if (mgos_sys_config_get_shelly_mode() == (int) Mode::kRollerShutter) {
     hap::CreateHAPWC(1, FindInput(1), FindInput(2), FindOutput(1),
                      FindOutput(2), FindPM(1), FindPM(2),
@@ -247,6 +244,8 @@ void CreateComponents(std::vector<std::unique_ptr<Component>> *comps,
     return;
   }
 
+  bool single_accessory = sensors.empty();
+
   if (mgos_sys_config_get_shelly_mode() == (int) Mode::kGarageDoor) {
     hap::CreateHAPGDO(1, FindInput(1), FindInput(2), FindOutput(1),
                       FindOutput(2), mgos_sys_config_get_gdo1(), comps, accs,
diff --git a/src/ShellyPlusI4/shelly_init.cpp b/src/ShellyPlusI4/shelly_init.cpp
index 79ad225d..1da619b7 100644
--- a/src/ShellyPlusI4/shelly_init.cpp
+++ b/src/ShellyPlusI4/shelly_init.cpp
@@ -63,6 +63,7 @@ void CreatePeripherals(std::vector<std::unique_ptr<Input>> *inputs,
       sensors = DiscoverDHTSensors(pin_in, pin_out);
     }
   } else {
+    RestoreUART();
     InitSysLED(LED_GPIO, LED_ON);
   }
   InitSysBtn(BTN_GPIO, BTN_DOWN);
diff --git a/src/shelly_main.cpp b/src/shelly_main.cpp
index 92b5681a..2d1fdb87 100644
--- a/src/shelly_main.cpp
+++ b/src/shelly_main.cpp
@@ -121,6 +121,16 @@ static std::vector<const HAPAccessory *> s_hap_accs;
 static std::unique_ptr<TempSensor> s_sys_temp_sensor;
 std::vector<std::unique_ptr<Component>> g_comps;
 
+void RestoreUART() {
+  struct mgos_uart_config ucfg;
+  int uart_no = 0;
+  mgos_uart_config_set_defaults(uart_no, &ucfg);
+
+  if (!mgos_uart_configure(uart_no, &ucfg)) {
+    LOG(LL_ERROR, ("Failed to configure UART%d", uart_no));
+  }
+}
+
 bool DetectAddon(int pin_in, int pin_out) {
   // case 1: input with pull up
   mgos_gpio_setup_input(pin_in, MGOS_GPIO_PULL_UP);
diff --git a/src/shelly_main.hpp b/src/shelly_main.hpp
index fc7ce188..cf7acdb7 100644
--- a/src/shelly_main.hpp
+++ b/src/shelly_main.hpp
@@ -41,6 +41,7 @@ namespace shelly {
 extern std::vector<std::unique_ptr<Component>> g_comps;
 
 bool DetectAddon(int pin_in, int pin_out);
+void RestoreUART();
 Input *FindInput(int id);
 Output *FindOutput(int id);
 PowerMeter *FindPM(int id);