DIO Line Passing question

I’m want to assure if is possible using the XBee 802.15.4 DIO lines to off an attached sensor using a transistor based circuit. The XBee is using RS-232 interface to connect to the sensor and I look that maybe I can use RTS pin to control a high and low line passing. I’m not want the answer about how to do it, but rather I want to assure if I can reach that using DIO lines passing.

Sure you can use that line via DIO line passing. Just understand that it is a GPIO line and what ever line you use as an input on one side must be an output on the other.