A us robotics external modem should work fine.. just drop the 12 volts to 9volts and there ya go. On Fri, 3 Jul 1998, Tom Robinson wrote: > I need to find a 12vdc modem for a remote access data logging project. > The modem has to operate to -40 and be low power for battery operation. > Anybody out there know where I can find such an animal? >