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100meter range will work only with very good antennas, both at the transmitter and at the receiver (not just a pcb trace or a whip: must be full dipole, likely outside). Will work only if not blocked by another transmission on the same (shared) frequency. 315Mhz works better in urban areas; 433Mhz is hopeless in urban areas because of all the other uses of that frequency....
operating frequency of RF modules 433MHz.
I just used a pair of ZigBee modules. Just sent the output in whatever format you want (1-wire + ground), receive with the mated module and you are done.
John