diff --git a/examples/Modules/StamPLC_AC/Relay/Relay.ino b/examples/Modules/StamPLC_AC/Relay/Relay.ino
new file mode 100644
index 0000000..8de2885
--- /dev/null
+++ b/examples/Modules/StamPLC_AC/Relay/Relay.ino
@@ -0,0 +1,33 @@
+/*
+ * SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
+#include <Arduino.h>
+#include <M5StamPLC.h>
+
+M5StamPLC_AC stamplc_ac;
+
+void setup()
+{
+    /* Init M5StamPLC */
+    M5StamPLC.begin();
+
+    /* Init M5StamPLC-AC */
+    while (!stamplc_ac.begin()) {
+        printf("M5StamPLC-AC init failed, retry in 1s...\n");
+        delay(1000);
+    }
+}
+
+void loop()
+{
+    static bool relay_state = false;
+
+    /* Toggle M5StamPLC-AC relay state */
+    relay_state = !relay_state;
+    stamplc_ac.writeRelay(relay_state);
+    printf("Write M5StamPLC-AC Relay to %s\n", stamplc_ac.readRelay() ? "ON" : "OFF");
+
+    delay(1000);
+}
diff --git a/examples/Modules/StamPLC_AC/StatusLight/StatusLight.ino b/examples/Modules/StamPLC_AC/StatusLight/StatusLight.ino
new file mode 100644
index 0000000..7ffce42
--- /dev/null
+++ b/examples/Modules/StamPLC_AC/StatusLight/StatusLight.ino
@@ -0,0 +1,49 @@
+/*
+ * SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
+#include <Arduino.h>
+#include <M5StamPLC.h>
+
+M5StamPLC_AC stamplc_ac;
+
+void setup()
+{
+    /* Init M5StamPLC */
+    M5StamPLC.begin();
+
+    /* Init M5StamPLC-AC */
+    while (!stamplc_ac.begin()) {
+        printf("M5StamPLC-AC init failed, retry in 1s...\n");
+        delay(1000);
+    }
+}
+
+void loop()
+{
+    /* Set status light to red */
+    stamplc_ac.setStatusLight(1, 0, 0);
+    printf("Set M5StamPLC-AC status light to red\n");
+    delay(1000);
+
+    /* Set status light to green */
+    stamplc_ac.setStatusLight(0, 1, 0);
+    printf("Set M5StamPLC-AC status light to green\n");
+    delay(1000);
+
+    /* Set status light to blue */
+    stamplc_ac.setStatusLight(0, 0, 1);
+    printf("Set M5StamPLC-AC status light to blue\n");
+    delay(1000);
+
+    /* Set status light to white */
+    stamplc_ac.setStatusLight(1, 1, 1);
+    printf("Set M5StamPLC-AC status light to white\n");
+    delay(1000);
+
+    /* Set status light to black */
+    stamplc_ac.setStatusLight(0, 0, 0);
+    printf("Set M5StamPLC-AC status light to black\n");
+    delay(1000);
+}
diff --git a/library.json b/library.json
index 0beb511..8c51e55 100644
--- a/library.json
+++ b/library.json
@@ -13,7 +13,7 @@
         "M5Unified": "*",
         "M5GFX": "*"
     },
-    "version": "1.1.0",
+    "version": "1.2.0",
     "frameworks": "arduino",
     "platforms": "espressif32"
 }
\ No newline at end of file
diff --git a/library.properties b/library.properties
index badfdc4..87c2f0f 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=M5StamPLC
-version=1.1.0
+version=1.2.0
 author=M5Stack
 maintainer=M5Stack
 sentence=M5StamPLC is a library for M5StamPLC
diff --git a/src/M5StamPLC.h b/src/M5StamPLC.h
index d743d9d..7ad30c9 100644
--- a/src/M5StamPLC.h
+++ b/src/M5StamPLC.h
@@ -8,6 +8,7 @@
 #include "utils/aw9523/aw9523.h"
 #include "utils/lm75b/lm75b.h"
 #include "utils/rx8130/rx8130.h"
+#include "modules/M5StamPLC_AC.h"
 #include <M5GFX.h>
 #include <M5Unified.hpp>
 #include <driver/twai.h>
diff --git a/src/modules/M5StamPLC_AC.cpp b/src/modules/M5StamPLC_AC.cpp
new file mode 100644
index 0000000..2d70426
--- /dev/null
+++ b/src/modules/M5StamPLC_AC.cpp
@@ -0,0 +1,98 @@
+/*
+ * SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
+#include "M5StamPLC_AC.h"
+#include "utils/make_unique_compat.h"
+#include <esp_log.h>
+#include <memory>
+
+static const char* _tag = "M5StamPLC_AC";
+
+static const uint8_t _ioe_address        = 0x44;
+static const uint8_t _pin_relay          = 2;
+static const uint8_t _pin_status_light_r = 5;
+static const uint8_t _pin_status_light_g = 6;
+static const uint8_t _pin_status_light_b = 7;
+
+bool M5StamPLC_AC::begin()
+{
+    if (_ioe) {
+        ESP_LOGW(_tag, "IOExpander already initialized");
+        return true;
+    }
+
+    _ioe = std::make_unique<m5::PI4IOE5V6408_Class>(_ioe_address, 400000, &m5::In_I2C);
+    if (!_ioe->begin()) {
+        _ioe.reset();
+        ESP_LOGE(_tag, "IOExpander initialization failed");
+        return false;
+    }
+
+    // AC relay
+    _ioe->setDirection(_pin_relay, true);
+    _ioe->setPullMode(_pin_relay, false);
+    _ioe->setHighImpedance(_pin_relay, false);
+
+    // Status light
+    auto setup_status_light_pin = [](m5::PI4IOE5V6408_Class* ioe, uint8_t pin) {
+        ioe->setDirection(pin, true);
+        ioe->setPullMode(pin, true);
+        ioe->setHighImpedance(pin, false);
+        ioe->digitalWrite(pin, true);
+    };
+
+    setup_status_light_pin(_ioe.get(), _pin_status_light_r);
+    setup_status_light_pin(_ioe.get(), _pin_status_light_g);
+    setup_status_light_pin(_ioe.get(), _pin_status_light_b);
+
+    return true;
+}
+
+bool M5StamPLC_AC::readRelay()
+{
+    if (!is_ioe_valid()) {
+        return false;
+    }
+
+    return _ioe->getWriteValue(_pin_relay);
+}
+
+void M5StamPLC_AC::writeRelay(const bool& state)
+{
+    if (!is_ioe_valid()) {
+        return;
+    }
+
+    _ioe->digitalWrite(_pin_relay, state);
+}
+
+void M5StamPLC_AC::setStatusLight(const uint8_t& r, const uint8_t& g, const uint8_t& b)
+{
+    if (!is_ioe_valid()) {
+        return;
+    }
+
+    auto set_channel = [](m5::PI4IOE5V6408_Class* ioe, uint8_t pin, uint8_t value) {
+        if (value == 0) {
+            ioe->setHighImpedance(pin, true);
+        } else {
+            ioe->setHighImpedance(pin, false);
+            ioe->digitalWrite(pin, false);
+        }
+    };
+
+    set_channel(_ioe.get(), _pin_status_light_r, r);
+    set_channel(_ioe.get(), _pin_status_light_g, g);
+    set_channel(_ioe.get(), _pin_status_light_b, b);
+}
+
+bool M5StamPLC_AC::is_ioe_valid()
+{
+    if (!_ioe) {
+        ESP_LOGE(_tag, "IOExpander not initialized");
+        return false;
+    }
+    return true;
+}
diff --git a/src/modules/M5StamPLC_AC.h b/src/modules/M5StamPLC_AC.h
new file mode 100644
index 0000000..3ed7b24
--- /dev/null
+++ b/src/modules/M5StamPLC_AC.h
@@ -0,0 +1,49 @@
+/*
+ * SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
+#pragma once
+#include <M5GFX.h>
+#include <M5Unified.hpp>
+#include <utility/PI4IOE5V6408_Class.hpp>
+#include <memory>
+
+class M5StamPLC_AC {
+public:
+    /**
+     * @brief Initialize M5StamPLC-AC
+     *
+     * @return true
+     * @return false
+     */
+    bool begin();
+
+    /**
+     * @brief Read Relay state
+     *
+     * @return true if ON, false if OFF
+     */
+    bool readRelay();
+
+    /**
+     * @brief Write AC Relay state
+     *
+     * @param state true if ON, false if OFF
+     */
+    void writeRelay(const bool& state);
+
+    /**
+     * @brief Set Status Light
+     *
+     * @param r
+     * @param g
+     * @param b
+     */
+    void setStatusLight(const uint8_t& r, const uint8_t& g, const uint8_t& b);
+
+protected:
+    std::unique_ptr<m5::PI4IOE5V6408_Class> _ioe;
+
+    bool is_ioe_valid();
+};
diff --git a/src/utils/make_unique_compat.h b/src/utils/make_unique_compat.h
new file mode 100644
index 0000000..aefe4fe
--- /dev/null
+++ b/src/utils/make_unique_compat.h
@@ -0,0 +1,33 @@
+/*
+ * SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
+#pragma once
+#include <memory>
+#include <utility>
+#include <type_traits>
+#include <cstddef>
+
+#if __cplusplus < 201402L
+namespace std {
+
+template <class T, class... Args>
+typename std::enable_if<!std::is_array<T>::value, std::unique_ptr<T>>::type make_unique(Args&&... args)
+{
+    return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
+}
+
+template <class T>
+typename std::enable_if<std::is_array<T>::value && std::extent<T>::value == 0, std::unique_ptr<T>>::type make_unique(
+    std::size_t n)
+{
+    using U = typename std::remove_extent<T>::type;
+    return std::unique_ptr<T>(new U[n]());
+}
+
+template <class T, class... Args>
+typename std::enable_if<(std::extent<T>::value != 0), void>::type make_unique(Args&&...) = delete;
+
+}  // namespace std
+#endif
diff --git a/src/utils/pi4ioe5v6408/pi4ioe5v6408.cpp b/src/utils/pi4ioe5v6408/pi4ioe5v6408.cpp
deleted file mode 100644
index a2cfb0e..0000000
--- a/src/utils/pi4ioe5v6408/pi4ioe5v6408.cpp
+++ /dev/null
@@ -1,108 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
- *
- * SPDX-License-Identifier: MIT
- */
-#include "pi4ioe5v6408.h"
-
-bool PI4IOE5V6408_Class::begin()
-{
-    auto id = readRegister8(0x01);
-    // printf("id: %d\n", id);
-    if (id == 0) {
-        return false;
-    }
-    return true;
-}
-
-// false input, true output
-void PI4IOE5V6408_Class::setDirection(uint8_t pin, bool direction)
-{
-    // Input, set 0
-    if (!direction) {
-        auto data = readRegister8(0x03);
-        data &= ~(1 << pin);
-        writeRegister8(0x03, data);
-    }
-    // Output, set 1
-    else {
-        auto data = readRegister8(0x03);
-        data |= (1 << pin);
-        writeRegister8(0x03, data);
-    }
-}
-
-void PI4IOE5V6408_Class::enablePull(uint8_t pin, bool enablePull)
-{
-    if (enablePull) {
-        auto data = readRegister8(0x0B);
-        data |= (1 << pin);
-        writeRegister8(0x0B, data);
-    } else {
-        auto data = readRegister8(0x0B);
-        data &= ~(1 << pin);
-        writeRegister8(0x0B, data);
-    }
-}
-
-// false down, true up
-void PI4IOE5V6408_Class::setPullMode(uint8_t pin, bool mode)
-{
-    if (mode) {
-        auto data = readRegister8(0x0D);
-        data |= (1 << pin);
-        writeRegister8(0x0D, data);
-    } else {
-        auto data = readRegister8(0x0D);
-        data &= ~(1 << pin);
-        writeRegister8(0x0D, data);
-    }
-}
-
-void PI4IOE5V6408_Class::setHighImpedance(uint8_t pin, bool enable)
-{
-    auto data = readRegister8(0x07);
-
-    if (enable) {
-        data |= (1 << pin);
-    } else {
-        data &= ~(1 << pin);
-    }
-
-    writeRegister8(0x07, data);
-}
-
-void PI4IOE5V6408_Class::digitalWrite(uint8_t pin, bool level)
-{
-    auto data = readRegister8(0x05);
-    // spdlog::info("data: {}", data);
-
-    if (level) {
-        data |= (1 << pin);
-    } else {
-        data &= ~(1 << pin);
-    }
-
-    writeRegister8(0x05, data);
-}
-
-bool PI4IOE5V6408_Class::digitalRead(uint8_t pin)
-{
-    auto data = readRegister8(0x0F);
-    return (data & (1 << pin)) != 0;
-}
-
-void PI4IOE5V6408_Class::resetIrq()
-{
-    readRegister8(0x13);
-}
-
-void PI4IOE5V6408_Class::disableIrq()
-{
-    writeRegister8(0x11, 0B11111111);
-}
-
-void PI4IOE5V6408_Class::enableIrq()
-{
-    writeRegister8(0x11, 0x0);
-}
diff --git a/src/utils/pi4ioe5v6408/pi4ioe5v6408.h b/src/utils/pi4ioe5v6408/pi4ioe5v6408.h
deleted file mode 100644
index ba37853..0000000
--- a/src/utils/pi4ioe5v6408/pi4ioe5v6408.h
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
- *
- * SPDX-License-Identifier: MIT
- */
-#pragma once
-#include <M5Unified.h>
-
-// https://www.diodes.com/assets/Datasheets/PI4IOE5V6408.pdf
-class PI4IOE5V6408_Class : public m5::I2C_Device {
-public:
-    PI4IOE5V6408_Class(std::uint8_t i2c_addr = 0x43, std::uint32_t freq = 400000, m5::I2C_Class* i2c = &m5::In_I2C)
-        : I2C_Device(i2c_addr, freq, i2c)
-    {
-    }
-
-    bool begin();
-
-    // false input, true output
-    void setDirection(uint8_t pin, bool direction);
-
-    void enablePull(uint8_t pin, bool enablePull);
-
-    // false down, true up
-    void setPullMode(uint8_t pin, bool mode);
-
-    void setHighImpedance(uint8_t pin, bool enable);
-
-    void digitalWrite(uint8_t pin, bool level);
-
-    bool digitalRead(uint8_t pin);
-
-    void resetIrq();
-
-    void disableIrq();
-
-    void enableIrq();
-};