diff --git a/boards.txt b/boards.txt
index 1d1540dc783..f59fdad841b 100644
--- a/boards.txt
+++ b/boards.txt
@@ -10018,3 +10018,104 @@ franzininho_wifi_msc_esp32s2.menu.DebugLevel.verbose=Verbose
 franzininho_wifi_msc_esp32s2.menu.DebugLevel.verbose.build.code_debug=5
 
 ##############################################################
+
+sonoff_dualr3.name=Sonoff DUALR3
+
+sonoff_dualr3.upload.tool=esptool_py
+sonoff_dualr3.upload.maximum_size=1310720
+sonoff_dualr3.upload.maximum_data_size=327680
+sonoff_dualr3.upload.flags=
+sonoff_dualr3.upload.extra_flags=
+
+sonoff_dualr3.serial.disableDTR=true
+sonoff_dualr3.serial.disableRTS=true
+
+sonoff_dualr3.build.tarch=xtensa
+sonoff_dualr3.build.bootloader_addr=0x1000
+sonoff_dualr3.build.target=esp32
+sonoff_dualr3.build.mcu=esp32
+sonoff_dualr3.build.core=esp32
+sonoff_dualr3.build.variant=esp32
+sonoff_dualr3.build.board=SONOFF_DUALR3
+
+sonoff_dualr3.build.f_cpu=240000000L
+sonoff_dualr3.build.flash_size=4MB
+sonoff_dualr3.build.flash_freq=40m
+sonoff_dualr3.build.flash_mode=dio
+sonoff_dualr3.build.boot=dio
+sonoff_dualr3.build.partitions=rainmaker
+sonoff_dualr3.build.defines=
+sonoff_dualr3.build.loop_core=
+sonoff_dualr3.build.event_core=
+
+sonoff_dualr3.menu.PartitionScheme.rainmaker=RainMaker
+sonoff_dualr3.menu.PartitionScheme.rainmaker.build.partitions=rainmaker
+sonoff_dualr3.menu.PartitionScheme.rainmaker.upload.maximum_size=3145728
+
+sonoff_dualr3.menu.CPUFreq.240=240MHz (WiFi/BT)
+sonoff_dualr3.menu.CPUFreq.240.build.f_cpu=240000000L
+sonoff_dualr3.menu.CPUFreq.160=160MHz (WiFi/BT)
+sonoff_dualr3.menu.CPUFreq.160.build.f_cpu=160000000L
+sonoff_dualr3.menu.CPUFreq.80=80MHz (WiFi/BT)
+sonoff_dualr3.menu.CPUFreq.80.build.f_cpu=80000000L
+sonoff_dualr3.menu.CPUFreq.40=40MHz (40MHz XTAL)
+sonoff_dualr3.menu.CPUFreq.40.build.f_cpu=40000000L
+sonoff_dualr3.menu.CPUFreq.26=26MHz (26MHz XTAL)
+sonoff_dualr3.menu.CPUFreq.26.build.f_cpu=26000000L
+sonoff_dualr3.menu.CPUFreq.20=20MHz (40MHz XTAL)
+sonoff_dualr3.menu.CPUFreq.20.build.f_cpu=20000000L
+sonoff_dualr3.menu.CPUFreq.13=13MHz (26MHz XTAL)
+sonoff_dualr3.menu.CPUFreq.13.build.f_cpu=13000000L
+sonoff_dualr3.menu.CPUFreq.10=10MHz (40MHz XTAL)
+sonoff_dualr3.menu.CPUFreq.10.build.f_cpu=10000000L
+
+sonoff_dualr3.menu.FlashMode.qio=QIO
+sonoff_dualr3.menu.FlashMode.qio.build.flash_mode=dio
+sonoff_dualr3.menu.FlashMode.qio.build.boot=qio
+sonoff_dualr3.menu.FlashMode.dio=DIO
+sonoff_dualr3.menu.FlashMode.dio.build.flash_mode=dio
+sonoff_dualr3.menu.FlashMode.dio.build.boot=dio
+sonoff_dualr3.menu.FlashMode.qout=QOUT
+sonoff_dualr3.menu.FlashMode.qout.build.flash_mode=dout
+sonoff_dualr3.menu.FlashMode.qout.build.boot=qout
+sonoff_dualr3.menu.FlashMode.dout=DOUT
+sonoff_dualr3.menu.FlashMode.dout.build.flash_mode=dout
+sonoff_dualr3.menu.FlashMode.dout.build.boot=dout
+
+sonoff_dualr3.menu.FlashFreq.80=80MHz
+sonoff_dualr3.menu.FlashFreq.80.build.flash_freq=80m
+sonoff_dualr3.menu.FlashFreq.40=40MHz
+sonoff_dualr3.menu.FlashFreq.40.build.flash_freq=40m
+
+sonoff_dualr3.menu.FlashSize.4M=4MB (32Mb)
+sonoff_dualr3.menu.FlashSize.4M.build.flash_size=4MB
+
+sonoff_dualr3.menu.UploadSpeed.921600=921600
+sonoff_dualr3.menu.UploadSpeed.921600.upload.speed=921600
+sonoff_dualr3.menu.UploadSpeed.115200=115200
+sonoff_dualr3.menu.UploadSpeed.115200.upload.speed=115200
+sonoff_dualr3.menu.UploadSpeed.256000.windows=256000
+sonoff_dualr3.menu.UploadSpeed.256000.upload.speed=256000
+sonoff_dualr3.menu.UploadSpeed.230400.windows.upload.speed=256000
+sonoff_dualr3.menu.UploadSpeed.230400=230400
+sonoff_dualr3.menu.UploadSpeed.230400.upload.speed=230400
+sonoff_dualr3.menu.UploadSpeed.460800.linux=460800
+sonoff_dualr3.menu.UploadSpeed.460800.macosx=460800
+sonoff_dualr3.menu.UploadSpeed.460800.upload.speed=460800
+sonoff_dualr3.menu.UploadSpeed.512000.windows=512000
+sonoff_dualr3.menu.UploadSpeed.512000.upload.speed=512000
+
+sonoff_dualr3.menu.DebugLevel.none=None
+sonoff_dualr3.menu.DebugLevel.none.build.code_debug=0
+sonoff_dualr3.menu.DebugLevel.error=Error
+sonoff_dualr3.menu.DebugLevel.error.build.code_debug=1
+sonoff_dualr3.menu.DebugLevel.warn=Warn
+sonoff_dualr3.menu.DebugLevel.warn.build.code_debug=2
+sonoff_dualr3.menu.DebugLevel.info=Info
+sonoff_dualr3.menu.DebugLevel.info.build.code_debug=3
+sonoff_dualr3.menu.DebugLevel.debug=Debug
+sonoff_dualr3.menu.DebugLevel.debug.build.code_debug=4
+sonoff_dualr3.menu.DebugLevel.verbose=Verbose
+sonoff_dualr3.menu.DebugLevel.verbose.build.code_debug=5
+
+##############################################################
diff --git a/libraries/RainMaker/examples/RMakerSonoffDualR3/.skip.esp32c3 b/libraries/RainMaker/examples/RMakerSonoffDualR3/.skip.esp32c3
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/libraries/RainMaker/examples/RMakerSonoffDualR3/.skip.esp32s2 b/libraries/RainMaker/examples/RMakerSonoffDualR3/.skip.esp32s2
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/libraries/RainMaker/examples/RMakerSonoffDualR3/RMakerSonoffDualR3.ino b/libraries/RainMaker/examples/RMakerSonoffDualR3/RMakerSonoffDualR3.ino
new file mode 100644
index 00000000000..37eda40134b
--- /dev/null
+++ b/libraries/RainMaker/examples/RMakerSonoffDualR3/RMakerSonoffDualR3.ino
@@ -0,0 +1,193 @@
+//This example demonstrates the ESP RainMaker with a standard Switch device.
+#include "RMaker.h"
+#include "WiFi.h"
+#include "WiFiProv.h"
+
+#define DEFAULT_POWER_MODE false
+const char *service_name = "PROV_SONOFF_DUALR3";
+const char *pop = "123456";
+
+// GPIO for push button
+static uint8_t gpio_reset = 0;
+// GPIO for switch
+static uint8_t gpio_switch1 = 32;
+static uint8_t gpio_switch2 = 33;
+// GPIO for virtual device
+static uint8_t gpio_relay1 = 27;
+static uint8_t gpio_relay2 = 14;
+/* Variable for reading pin status*/
+bool switch_state_ch1 = true;
+bool switch_state_ch2 = true;
+// GPIO for link status LED
+static uint8_t gpio_led = 13;
+
+struct LightSwitch {
+    const uint8_t pin;
+    bool pressed;
+};
+
+// Define the light switches for channel 1 and 2
+LightSwitch switch_ch1 = {gpio_switch1, false};
+LightSwitch switch_ch2 = {gpio_switch2, false};
+
+//The framework provides some standard device types like switch, lightbulb, fan, temperature sensor.
+static Switch my_switch1("Switch_ch1", &gpio_relay1);
+static Switch my_switch2("Switch_ch2", &gpio_relay2);
+
+void sysProvEvent(arduino_event_t *sys_event)
+{
+    switch (sys_event->event_id) {      
+        case ARDUINO_EVENT_PROV_START:
+#if CONFIG_IDF_TARGET_ESP32
+        Serial.printf("\nProvisioning Started with name \"%s\" and PoP \"%s\" on BLE\n", service_name, pop);
+        printQR(service_name, pop, "ble");
+#else
+        Serial.printf("\nProvisioning Started with name \"%s\" and PoP \"%s\" on SoftAP\n", service_name, pop);
+        printQR(service_name, pop, "softap");
+#endif        
+        break;
+        case ARDUINO_EVENT_WIFI_STA_CONNECTED:
+        Serial.printf("\nConnected to Wi-Fi!\n");
+        digitalWrite(gpio_led, true);
+        break;
+    }
+}
+
+void write_callback(Device *device, Param *param, const param_val_t val, void *priv_data, write_ctx_t *ctx)
+{
+    const char *device_name = device->getDeviceName();
+    const char *param_name = param->getParamName();
+
+    if(strcmp(device_name, "Switch_ch1") == 0) {
+      
+      Serial.printf("Lightbulb = %s\n", val.val.b? "true" : "false");
+      
+      if(strcmp(param_name, "Power") == 0) {
+          Serial.printf("Received value = %s for %s - %s\n", val.val.b? "true" : "false", device_name, param_name);
+        switch_state_ch1 = val.val.b;
+        (switch_state_ch1 == false) ? digitalWrite(gpio_relay1, LOW) : digitalWrite(gpio_relay1, HIGH);
+        param->updateAndReport(val);
+      }
+      
+    } else if(strcmp(device_name, "Switch_ch2") == 0) {
+      
+      Serial.printf("Switch value = %s\n", val.val.b? "true" : "false");
+
+      if(strcmp(param_name, "Power") == 0) {
+        Serial.printf("Received value = %s for %s - %s\n", val.val.b? "true" : "false", device_name, param_name);
+        switch_state_ch2 = val.val.b;
+        (switch_state_ch2 == false) ? digitalWrite(gpio_relay2, LOW) : digitalWrite(gpio_relay2, HIGH);
+        param->updateAndReport(val);
+      }
+  
+    }
+ 
+}
+
+void ARDUINO_ISR_ATTR isr(void* arg) {
+    LightSwitch* s = static_cast<LightSwitch*>(arg);
+    s->pressed = true;
+}
+
+void setup()
+{
+    uint32_t chipId = 0;
+    
+    Serial.begin(115200);
+
+    // Configure the input GPIOs
+    pinMode(gpio_reset, INPUT);
+    pinMode(switch_ch1.pin, INPUT_PULLUP);
+    attachInterruptArg(switch_ch1.pin, isr, &switch_ch1, CHANGE);
+    pinMode(switch_ch2.pin, INPUT_PULLUP);
+    attachInterruptArg(switch_ch2.pin, isr, &switch_ch2, CHANGE);
+    
+    // Set the Relays GPIOs as output mode
+    pinMode(gpio_relay1, OUTPUT);
+    pinMode(gpio_relay2, OUTPUT);
+    pinMode(gpio_led, OUTPUT);
+    // Write to the GPIOs the default state on booting
+    digitalWrite(gpio_relay1, DEFAULT_POWER_MODE);
+    digitalWrite(gpio_relay2, DEFAULT_POWER_MODE);
+    digitalWrite(gpio_led, false);
+
+    Node my_node;    
+    my_node = RMaker.initNode("Sonoff Dual R3");
+
+    //Standard switch device
+    my_switch1.addCb(write_callback);
+    my_switch2.addCb(write_callback);
+
+    //Add switch device to the node   
+    my_node.addDevice(my_switch1);
+    my_node.addDevice(my_switch2);
+
+    //This is optional 
+    RMaker.enableOTA(OTA_USING_PARAMS);
+    //If you want to enable scheduling, set time zone for your region using setTimeZone(). 
+    //The list of available values are provided here https://rainmaker.espressif.com/docs/time-service.html
+    // RMaker.setTimeZone("Asia/Shanghai");
+    // Alternatively, enable the Timezone service and let the phone apps set the appropriate timezone
+    RMaker.enableTZService();
+    RMaker.enableSchedule();
+
+    //Service Name
+    for(int i=0; i<17; i=i+8) {
+      chipId |= ((ESP.getEfuseMac() >> (40 - i)) & 0xff) << i;
+    }
+
+    Serial.printf("\nChip ID:  %d Service Name: %s\n", chipId, service_name);
+
+    Serial.printf("\nStarting ESP-RainMaker\n");
+    RMaker.start();
+
+    WiFi.onEvent(sysProvEvent);
+#if CONFIG_IDF_TARGET_ESP32
+    WiFiProv.beginProvision(WIFI_PROV_SCHEME_BLE, WIFI_PROV_SCHEME_HANDLER_FREE_BTDM, WIFI_PROV_SECURITY_1, pop, service_name);
+#else
+    WiFiProv.beginProvision(WIFI_PROV_SCHEME_SOFTAP, WIFI_PROV_SCHEME_HANDLER_NONE, WIFI_PROV_SECURITY_1, pop, service_name);
+#endif
+}
+
+void loop()
+{
+
+    if (switch_ch1.pressed) {
+        Serial.printf("Switch 1 has been changed\n");
+        switch_ch1.pressed = false;
+        // Toggle switch 1 device state
+        switch_state_ch1 = !switch_state_ch1;
+        Serial.printf("Toggle State to %s.\n", switch_state_ch1 ? "true" : "false");
+        my_switch1.updateAndReportParam(ESP_RMAKER_DEF_POWER_NAME, switch_state_ch1);
+        (switch_state_ch1 == false) ? digitalWrite(gpio_relay1, LOW) : digitalWrite(gpio_relay1, HIGH);
+    } else if (switch_ch2.pressed) {
+        Serial.printf("Switch 2 has been changed\n");
+        switch_ch2.pressed = false;
+        // Toggle switch 2 device state
+        switch_state_ch2 = !switch_state_ch2;
+        Serial.printf("Toggle State to %s.\n", switch_state_ch2 ? "true" : "false");
+        my_switch2.updateAndReportParam(ESP_RMAKER_DEF_POWER_NAME, switch_state_ch2);
+        (switch_state_ch2 == false) ? digitalWrite(gpio_relay2, LOW) : digitalWrite(gpio_relay2, HIGH);
+    }
+
+    // Read GPIO0 (external button to reset device
+    if(digitalRead(gpio_reset) == LOW) { //Push button pressed
+        Serial.printf("Reset Button Pressed!\n");
+        // Key debounce handling
+        delay(100);
+        int startTime = millis();
+        while(digitalRead(gpio_reset) == LOW) delay(50);
+        int endTime = millis();
+
+        if ((endTime - startTime) > 10000) {
+          // If key pressed for more than 10secs, reset all
+          Serial.printf("Reset to factory.\n");
+          RMakerFactoryReset(2);
+        } else if ((endTime - startTime) > 3000) {
+          Serial.printf("Reset Wi-Fi.\n");
+          // If key pressed for more than 3secs, but less than 10, reset Wi-Fi
+          RMakerWiFiReset(2);
+        }
+    }
+    delay(100);
+}
diff --git a/variants/sonoff_dualr3/pins_arduino.h b/variants/sonoff_dualr3/pins_arduino.h
new file mode 100644
index 00000000000..eec170ae21e
--- /dev/null
+++ b/variants/sonoff_dualr3/pins_arduino.h
@@ -0,0 +1,27 @@
+#ifndef Pins_Arduino_h
+#define Pins_Arduino_h
+
+#include <stdint.h>
+
+#define EXTERNAL_NUM_INTERRUPTS 16
+#define NUM_DIGITAL_PINS        40
+#define NUM_ANALOG_INPUTS       16
+
+#define analogInputToDigitalPin(p)  (((p)<20)?(esp32_adc2gpio[(p)]):-1)
+#define digitalPinToInterrupt(p)    (((p)<40)?(p):-1)
+#define digitalPinHasPWM(p)         (p < 34)
+
+static const uint8_t TX = 1;
+static const uint8_t RX = 3;
+
+static const uint8_t BUTTON = 0;
+static const uint8_t LED_LINK = 13;
+static const uint8_t RELAY_2 = 14;
+static const uint8_t RELAY_1 = 27;
+static const uint8_t SWITCH_2 = 33;
+static const uint8_t SWITCH_1 = 32;
+
+static const uint8_t CSE7761_TX = 25;
+static const uint8_t CSE7761_RX = 26;
+
+#endif /* Pins_Arduino_h */