diff --git a/src/PCA9633.cpp b/src/PCA9633.cpp
index 1af717a..61582de 100644
--- a/src/PCA9633.cpp
+++ b/src/PCA9633.cpp
@@ -147,6 +147,20 @@ void PCA9633::setDrvState(uint8_t state) {
     writeReg(REG_MODE2, newReg);
 }
 
+void PCA9633::setInvertState(uint8_t invert) {
+
+    uint8_t prevReg = readReg(REG_MODE2);
+    uint8_t newReg;
+
+    // first clear the INVRT bit
+    newReg = prevReg & ~(1 << BIT_INVRT);
+
+    // second set new state to specified invrt
+    newReg |= (state << BIT_INVRT);
+
+    writeReg(REG_MODE2, newReg);
+}
+
 void PCA9633::setAutoIncrement(uint8_t option) {
 
     uint8_t newReg;
diff --git a/src/PCA9633.h b/src/PCA9633.h
index dd2fc92..3674b5d 100644
--- a/src/PCA9633.h
+++ b/src/PCA9633.h
@@ -207,6 +207,18 @@
  */
 #define OUTDRV_TOTEM_POLE 1
 
+// LED driver invert mode, INVRT (page 12, table 9, MODE2 register table, also see section 7.7)
+
+/**
+ * The 4 LED outputs are configured with non-inverting outputs
+ */
+#define INVERT_OFF 0
+
+/**
+ * The 4 LED outputs are configured with inverting outputs
+ */
+#define INVERT_ON 1
+
 // LED driver output state, LEDOUT (page 14, below table 13)
 
 /**
@@ -404,6 +416,15 @@ class PCA9633 {
     */
     void setDrvState(uint8_t state);
 
+    /**
+    * Set the global output invert mode. There are two types:
+    *   - INVERT_OFF
+    *   - INVERT_ON
+    *
+    * @param state  One of the two possible states
+    */
+    void setInvertState(uint8_t state);
+
     /**
     * Set the LED driver output state for a given channel. There are four states:
     *   - LDR_STATE_OFF