EM4305 125Khz Writable Rewrite RFID Tokens
http://www.icstation.com/product_info.php?products_id=2227ICStation USB Touch Control Dimmer Lamp LED Light
http://www.icstation.com/product_info.php?products_id=3856New USB to TTL Serial Cable Adapter FTDI Chipset FT232 USB Cable
http://www.icstation.com/product_info.php?products_id=1658
EM4305 RFID Token AU$0.96, USB Touch Dimmer LED AU$2.42, USB to TTL Serial Cable Adapter AU$7.34
![](https://files.ozbargain.com.au/u/02/104502-38.jpg?h=05f6ff00)
30
that's very expensive. i bought some recently for < $2 on ebay.