diff --git a/Adafruit_PN532.cpp b/Adafruit_PN532.cpp
index 737659d..f6a640b 100644
--- a/Adafruit_PN532.cpp
+++ b/Adafruit_PN532.cpp
@@ -272,6 +272,24 @@ uint32_t Adafruit_PN532::getFirmwareVersion(void) {
   return response;
 }
 
+/**************************************************************************/
+/*!
+    @brief  Puts the module into sleep mode
+
+    @returns  1 if everything is OK, 0 if unable to shutdown
+*/
+/**************************************************************************/
+
+bool Adafruit_PN532::shutDown() {
+	pn532_packetbuffer[0] = PN532_COMMAND_POWERDOWN;
+	pn532_packetbuffer[1] =  0x20; //(0x20, for SPI) (0x28 for SPI and RF detectionThe wakeup source(s) you want too use
+	pn532_packetbuffer[2] = 0x01; // To eneable the IRQ, 0x00 if you dont want too use the IRQ
+
+
+	if(sendCommandCheckAck(pn532_packetbuffer, 3))
+	return pn532_packetbuffer[1];
+}
+
 /**************************************************************************/
 /*!
     @brief  Sends a command and waits a specified period for the ACK
diff --git a/Adafruit_PN532.h b/Adafruit_PN532.h
index 46eaba8..b909674 100644
--- a/Adafruit_PN532.h
+++ b/Adafruit_PN532.h
@@ -166,6 +166,7 @@ class Adafruit_PN532 {
   bool writeGPIO(uint8_t pinstate);
   uint8_t readGPIO(void);
   bool setPassiveActivationRetries(uint8_t maxRetries);
+  bool shutDown(void);
 
   // ISO14443A functions
   bool readPassiveTargetID(