1. The AH3712 is a latching Hall-effect magnetic sensor designed for automotive electrical conditions, available in various packaging options. 2. It switches 'on' with a magnetic pole above a certain flux density and 'off' with the opposite pole of the same magnitude. 3. The sensor operates from 3.0 to 27V and is protected against load-dump up to 40V, with operation temperature range from -40 to +125°C.