The Probe-Interface I is a link between ME Probes and PC. It demodulates the probe`s FSK (frequency shift keying) -signals and generates a constant current supply. Probe and Interface I are fed by a 12 V battery.
low cost interface
data input: FSK signals
data output: RS232
baudrate: 1200, 9600 bit/s
power supply:10 - 14 VDC (12 V battery)
For further details have a look at technology.