user1671: I'm trying to get the power consumption of a MFRC522 RFID module down, currently while running it consumes about 4mA. There should be a way to put it into sleep mode, I just can't find any documentation on it. I'm using the module with a arduino currently if that helps; and this is the module itself : MFRC522

user2881: http://www.nxp.com/documents/data_sheet/MFRC522.pdf
Look at section 8.6.2   Soft power-down mode.

1671: <p>I'm trying to get the power consumption of a MFRC522 RFID module down, currently while running it consumes about 4mA. There should be a way to put it into sleep mode, I just can't find any documentation on it. I'm using the module with a arduino currently if that helps; and this is the module itself : <a href="http://rads.stackoverflow.com/amzn/click/B00E0ODLWQ" rel="nofollow">MFRC522</a></p>
 2881: <p><a href="http://www.nxp.com/documents/data_sheet/MFRC522.pdf" rel="nofollow">http://www.nxp.com/documents/data_sheet/MFRC522.pdf</a></p>

<p>Look at section <code>8.6.2   Soft power-down mode</code>.</p>
