Buy one of the ones that have a USB port. You can have as many consoles as you like all listening to the one 5-in-1 sensor, so start your collection.
My second console was a 1035 with USB, followed by the bridge a few months later.
Someone did post instructions on the web for yanking the receiver out of a non-USB console and tapping it via serial port when the 5-in-1 system first came out and didn't have USB interfaces yet. They needed to decode the Acu-Rite radio protocol with special software, which I believe they also made available.....