diff --git a/components/ratgdo/__init__.py b/components/ratgdo/__init__.py
index e262bcf..f55ae1e 100644
--- a/components/ratgdo/__init__.py
+++ b/components/ratgdo/__init__.py
@@ -33,7 +33,8 @@ CONF_PROTOCOL = "protocol"
 
 PROTOCOL_SECPLUSV1 = "secplusv1"
 PROTOCOL_SECPLUSV2 = "secplusv2"
-SUPPORTED_PROTOCOLS = [PROTOCOL_SECPLUSV1, PROTOCOL_SECPLUSV2]
+PROTOCOL_DRYCONTACT = "drycontact"
+SUPPORTED_PROTOCOLS = [PROTOCOL_SECPLUSV1, PROTOCOL_SECPLUSV2, PROTOCOL_DRYCONTACT]
 
 CONFIG_SCHEMA = cv.Schema(
     {
@@ -99,4 +100,6 @@ async def to_code(config):
         cg.add_define("PROTOCOL_SECPLUSV1")
     elif config[CONF_PROTOCOL] == PROTOCOL_SECPLUSV2:
         cg.add_define("PROTOCOL_SECPLUSV2")        
+    elif config[CONF_PROTOCOL] == PROTOCOL_DRYCONTACT:
+        cg.add_define("PROTOCOL_DRYCONTACT")        
     cg.add(var.init_protocol())
diff --git a/components/ratgdo/dry_contact.cpp b/components/ratgdo/dry_contact.cpp
new file mode 100644
index 0000000..607badf
--- /dev/null
+++ b/components/ratgdo/dry_contact.cpp
@@ -0,0 +1,75 @@
+
+#include "ratgdo.h"
+#include "dry_contact.h"
+
+#include "esphome/core/log.h"
+#include "esphome/core/scheduler.h"
+#include "esphome/core/gpio.h"
+
+
+
+namespace esphome {
+namespace ratgdo {
+namespace dry_contact {
+
+    static const char* const TAG = "ratgdo_dry_contact";
+
+
+    void DryContact::setup(RATGDOComponent* ratgdo, Scheduler* scheduler, InternalGPIOPin* rx_pin, InternalGPIOPin* tx_pin)
+    {
+        this->ratgdo_ = ratgdo;
+        this->scheduler_ = scheduler;
+        this->tx_pin_ = tx_pin;
+        this->rx_pin_ = rx_pin;
+    }
+
+
+    void DryContact::loop() 
+    {
+    }
+
+    void DryContact::dump_config()
+    {
+        ESP_LOGCONFIG(TAG, "  Protocol: dry contact");
+    }
+
+
+    void DryContact::sync()
+    {
+    }
+
+
+    void DryContact::light_action(LightAction action)
+    {
+        ESP_LOG1(TAG, "Ignoring light action: %s", LightAction_to_string(action));
+        return;
+    }
+
+    void DryContact::lock_action(LockAction action)
+    {
+        ESP_LOG1(TAG, "Ignoring lock action: %s", LockAction_to_string(action));
+        return;
+    }
+
+    void DryContact::door_action(DoorAction action)
+    {
+        if (action != DoorAction::TOGGLE) {
+            ESP_LOG1(TAG, "Ignoring door action: %s", DoorAction_to_string(action));
+            return;
+        }
+        ESP_LOG1(TAG, "Door action: %s", DoorAction_to_string(action));
+
+        this->tx_pin_->digital_write(1);
+        this->scheduler_->set_timeout(this->ratgdo_, "", 200, [=] {
+            this->tx_pin_->digital_write(0);
+        });
+    }
+
+    Result DryContact::call(Args args) 
+    {
+        return {};
+    }
+
+} // namespace DryContact
+} // namespace ratgdo
+} // namespace esphome
diff --git a/components/ratgdo/dry_contact.h b/components/ratgdo/dry_contact.h
new file mode 100644
index 0000000..d4c3446
--- /dev/null
+++ b/components/ratgdo/dry_contact.h
@@ -0,0 +1,45 @@
+#pragma once
+
+#include "SoftwareSerial.h" // Using espsoftwareserial https://github.com/plerup/espsoftwareserial
+#include "esphome/core/optional.h"
+
+#include "ratgdo_state.h"
+#include "protocol.h"
+#include "callbacks.h"
+#include "observable.h"
+
+namespace esphome {
+
+    class Scheduler;
+    class InternalGPIOPin;
+
+namespace ratgdo {
+namespace dry_contact {
+
+    using namespace esphome::ratgdo::protocol;
+
+    class DryContact : public Protocol {
+    public:
+        void setup(RATGDOComponent* ratgdo, Scheduler* scheduler, InternalGPIOPin* rx_pin, InternalGPIOPin* tx_pin);
+        void loop();
+        void dump_config();
+
+        void sync();
+
+        void light_action(LightAction action);
+        void lock_action(LockAction action);
+        void door_action(DoorAction action);
+
+        Result call(Args args);
+
+    protected:
+        InternalGPIOPin* tx_pin_;
+        InternalGPIOPin* rx_pin_;
+
+        RATGDOComponent* ratgdo_;
+        Scheduler* scheduler_;
+    };
+
+} // namespace secplus1
+} // namespace ratgdo
+} // namespace esphome
diff --git a/components/ratgdo/ratgdo.cpp b/components/ratgdo/ratgdo.cpp
index b41e7bd..6f84a70 100644
--- a/components/ratgdo/ratgdo.cpp
+++ b/components/ratgdo/ratgdo.cpp
@@ -16,6 +16,7 @@
 #include "common.h"
 #include "secplus1.h"
 #include "secplus2.h"
+#include "dry_contact.h"
 
 #include "esphome/core/log.h"
 #include "esphome/core/gpio.h"
@@ -64,6 +65,9 @@ namespace ratgdo {
 #endif        
 #ifdef PROTOCOL_SECPLUSV1
         this->protocol_ = new secplus1::Secplus1();
+#endif        
+#ifdef PROTOCOL_DRYCONTACT
+        this->protocol_ = new dry_contact::DryContact();
 #endif        
     }