diff --git a/Makefile b/Makefile
index 66b960d4..a65123b7 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,7 @@
 MAKEFLAGS += --warn-undefined-variables
 
-.PHONY: build check-format format release upload Shelly1 Shelly1L Shelly1PM Shelly25 Shelly2 ShellyI3 ShellyPlug ShellyPlugS ShellyRGBW2
+.PHONY: build check-format format release upload \
+        Shelly1 Shelly1L Shelly1PM Shelly25 Shelly2 ShellyI3 ShellyPlug ShellyPlugS ShellyPlugUS1 ShellyRGBW2
 
 MOS ?= mos
 # Build locally by default if Docker is available.
@@ -56,6 +57,9 @@ ShellyPlug: build-ShellyPlug
 ShellyPlugS: build-ShellyPlugS
 	@true
 
+ShellyPlugUS1: build-ShellyPlugUS1
+	@true
+
 ShellyRGBW2: build-ShellyRGBW2
 	@true
 
diff --git a/mos.yml b/mos.yml
index c66d0885..0acfc6f2 100644
--- a/mos.yml
+++ b/mos.yml
@@ -438,6 +438,37 @@ conds:
         - ["sw1.state_led_en", 1]
         - ["bl0937.power_coeff", 1.64358469]  # (16 + 1010 + 1935) / (9.55 + 617 + 1175)
 
+  - when: build_vars.MODEL == "ShellyPlugUS1"
+    apply:
+      name: shelly-plug-us1
+      libs:
+        - location: https://github.com/mongoose-os-libs/mongoose
+          variant: esp8266-nossl
+      build_vars:
+        FLASH_SIZE: 2097152
+        FS_SIZE: 262144
+        BOOT_CONFIG_ADDR: 0x7000
+        MGOS_ROOT_FS_TYPE: SPIFFS
+      cdefs:
+        LED_GPIO: 2  # Blue, 0 red.
+        LED_ON: 0
+        BTN_GPIO: 13
+        BTN_DOWN: 0
+        PRODUCT_HW_REV: '"1.0"'
+        STOCK_FW_MODEL: '"SHPLG-U1"'
+        MG_ENABLE_SSL: 0
+      config_schema:
+        - ["device.id", "shellyplugu1-??????"]
+        - ["shelly.name", "shellyplugu1-??????"]
+        - ["wifi.ap.ssid", "shellyplugu1-??????"]
+        - ["sw1", "sw", {title: "Plug settings"}]
+        - ["sw1.name", "Shelly Plug S"]
+        - ["sw1.in_mode", -1]
+        - ["sw1.svc_type", 1]  # Outlet
+        - ["sw1.initial_state", 2]
+        - ["sw1.state_led_en", 1]
+        - ["bl0937.power_coeff", 1.64358469]  # Same as ShellyPlugS
+
   - when: build_vars.MODEL == "ShellyRGBW2"
     apply:
       name: rgbw2-color # To allow OTA from stock fw.
diff --git a/src/ShellyPlugUS1/shelly_init.cpp b/src/ShellyPlugUS1/shelly_init.cpp
new file mode 100644
index 00000000..4d98c813
--- /dev/null
+++ b/src/ShellyPlugUS1/shelly_init.cpp
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) Shelly-HomeKit Contributors
+ * All rights reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "shelly_main.hpp"
+#include "shelly_output.hpp"
+#include "shelly_pm_bl0937.hpp"
+#include "shelly_temp_sensor_ntc.hpp"
+
+namespace shelly {
+
+static OutputPin *s_led_out = nullptr;
+
+void CreatePeripherals(std::vector<std::unique_ptr<Input>> *inputs,
+                       std::vector<std::unique_ptr<Output>> *outputs,
+                       std::vector<std::unique_ptr<PowerMeter>> *pms,
+                       std::unique_ptr<TempSensor> *sys_temp) {
+  outputs->emplace_back(new OutputPin(1, 15, 1));
+  s_led_out = new OutputPin(99, 0, 0);  // Red LED.
+  std::unique_ptr<PowerMeter> pm(
+      new BL0937PowerMeter(1, 5 /* CF */, 14 /* CF1 */, 12 /* SEL */, 2));
+  const Status &st = pm->Init();
+  if (st.ok()) {
+    pms->emplace_back(std::move(pm));
+  } else {
+    const std::string &s = st.ToString();
+    LOG(LL_ERROR, ("PM init failed: %s", s.c_str()));
+  }
+  sys_temp->reset(new TempSensorSDNT1608X103F3950(0, 3.3f, 33000.0f));
+}
+
+void CreateComponents(std::vector<std::unique_ptr<Component>> *comps,
+                      std::vector<std::unique_ptr<mgos::hap::Accessory>> *accs,
+                      HAPAccessoryServerRef *svr) {
+  CreateHAPSwitch(1, mgos_sys_config_get_sw1(), nullptr, comps, accs, svr,
+                  true /* to_pri_acc */, s_led_out);
+}
+
+}  // namespace shelly