>Key requirements are: really low power, SOT-23-5 compatible or easily >kludgeable in the available space--and no re-design of the PCB's. Input is >6 to 15 volts DC, with the desired trip point at 6.1 volts. Open drain >output is not mandatory. Kelly, When/if you get help on this, I'd appreciate it - I need something similar for a data logger too. Thanks. Andy ================================================================== Eternity is only a heartbeat away - are you ready? Ask me how! ------------------------------------------------------------------ andy@rc-hydros.com http://www.rc-hydros.com - Race Boats andy@montanadesign.com http://www.montanadesign.com - Electronics ==================================================================