How to wire up a reed-switch

[greg_yia]

Hi all, I want to wire up a reed-switch (model: ct05) to a ZigBee SoC (Model: cc2430), it has an onboard 8051 µ on it.

Can anyone suggest what type of circuit i need.

I found this online but its confusing.
http://www.powercontrol.com.au/Ultraswitch/Reed-Switch-Reference.pdf

Thanks
Greg