none
http://www.rohm.com/products/databook/plm/pdf/rpm872.pdfIrDA infrared communication module RPM872
Nearest Sale Representative:: http://www.rohmelectronics.com/sales/usa/statesl-m.htm#MA Part #:: http://www.rohmelectronics.com/products/irda.htm will try to call to see if we can get them fast and cheap...Data Sheet looks good since ~60cm range