Handheld remote control

I am seeking an XBee-based handheld remote controller. It should have the following features:
[li]Two or more buttons
[/li][li]XBee or XBee Pro module
[/li][li]Battery Compartment
When a button is pressed, the controller should transmit a configurable text string. I want to specify the string for each button.

Are there any ready-to-use devices available that meet these requirements?